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Finding the Fourth Proportional to 543,374.10, 815,061.15 and 354,417.30

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Solution

The fourth proportional to 543,374.10, 815,061.15 and 354,417.30 is: 531,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,374.10 : 815,061.15 = 354,417.30 : x
  2. Step 2: Convert to fraction form
    543,374.10/815,061.15 = 354,417.30/x
  3. Step 3: Cross multiply
    543,374.10x = 815,061.15 × 354,417.30
  4. Step 4: Simplify right side
    543,374.10x = 288,871,772,117.90
  5. Step 5: Solve for x
    x = 288,871,772,117.90/543,374.10
  6. Step 6: Final answer
    x = 531,625.95

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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.