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Finding the Fourth Proportional to 288,454.02, 398,058.17 and 159,390.45

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Solution

The fourth proportional to 288,454.02, 398,058.17 and 159,390.45 is: 219,954.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,454.02 : 398,058.17 = 159,390.45 : x
  2. Step 2: Convert to fraction form
    288,454.02/398,058.17 = 159,390.45/x
  3. Step 3: Cross multiply
    288,454.02x = 398,058.17 × 159,390.45
  4. Step 4: Simplify right side
    288,454.02x = 63,446,670,842.48
  5. Step 5: Solve for x
    x = 63,446,670,842.48/288,454.02
  6. Step 6: Final answer
    x = 219,954.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.