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Finding the Fourth Proportional to 625,400.07, 938,087.15 and 152,087.91

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Solution

The fourth proportional to 625,400.07, 938,087.15 and 152,087.91 is: 228,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,400.07 : 938,087.15 = 152,087.91 : x
  2. Step 2: Convert to fraction form
    625,400.07/938,087.15 = 152,087.91/x
  3. Step 3: Cross multiply
    625,400.07x = 938,087.15 × 152,087.91
  4. Step 4: Simplify right side
    625,400.07x = 142,671,713,280.92
  5. Step 5: Solve for x
    x = 142,671,713,280.92/625,400.07
  6. Step 6: Final answer
    x = 228,128.71

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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.