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Finding the Fourth Proportional to 547,225.20, 819,088.20 and 389,761.20

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Solution

The fourth proportional to 547,225.20, 819,088.20 and 389,761.20 is: 583,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,225.20 : 819,088.20 = 389,761.20 : x
  2. Step 2: Convert to fraction form
    547,225.20/819,088.20 = 389,761.20/x
  3. Step 3: Cross multiply
    547,225.20x = 819,088.20 × 389,761.20
  4. Step 4: Simplify right side
    547,225.20x = 319,248,799,737.84
  5. Step 5: Solve for x
    x = 319,248,799,737.84/547,225.20
  6. Step 6: Final answer
    x = 583,395.65

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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.