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Finding the Fourth Proportional to 372,014.60, 558,021.90 and 260,040.20

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Solution

The fourth proportional to 372,014.60, 558,021.90 and 260,040.20 is: 390,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,014.60 : 558,021.90 = 260,040.20 : x
  2. Step 2: Convert to fraction form
    372,014.60/558,021.90 = 260,040.20/x
  3. Step 3: Cross multiply
    372,014.60x = 558,021.90 × 260,040.20
  4. Step 4: Simplify right side
    372,014.60x = 145,108,126,480.38
  5. Step 5: Solve for x
    x = 145,108,126,480.38/372,014.60
  6. Step 6: Final answer
    x = 390,060.30

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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.