Home / 278,058,323.40-417,087,485.10-213,687,040.20

Finding the Fourth Proportional to 278,058,323.40, 417,087,485.10 and 213,687,040.20

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Solution

The fourth proportional to 278,058,323.40, 417,087,485.10 and 213,687,040.20 is: 320,530,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,058,323.40 : 417,087,485.10 = 213,687,040.20 : x
  2. Step 2: Convert to fraction form
    278,058,323.40/417,087,485.10 = 213,687,040.20/x
  3. Step 3: Cross multiply
    278,058,323.40x = 417,087,485.10 × 213,687,040.20
  4. Step 4: Simplify right side
    278,058,323.40x = 89,126,190,195,480,608
  5. Step 5: Solve for x
    x = 89,126,190,195,480,608/278,058,323.40
  6. Step 6: Final answer
    x = 320,530,560.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.