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Finding the Fourth Proportional to 369,620.68, 554,426.16 and 89,135.68

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Solution

The fourth proportional to 369,620.68, 554,426.16 and 89,135.68 is: 133,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,620.68 : 554,426.16 = 89,135.68 : x
  2. Step 2: Convert to fraction form
    369,620.68/554,426.16 = 89,135.68/x
  3. Step 3: Cross multiply
    369,620.68x = 554,426.16 × 89,135.68
  4. Step 4: Simplify right side
    369,620.68x = 49,419,152,781.39
  5. Step 5: Solve for x
    x = 49,419,152,781.39/369,620.68
  6. Step 6: Final answer
    x = 133,702.35

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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.