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Finding the Fourth Proportional to 625,457.34, 938,186.28 and 152,139.78

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Solution

The fourth proportional to 625,457.34, 938,186.28 and 152,139.78 is: 228,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,457.34 : 938,186.28 = 152,139.78 : x
  2. Step 2: Convert to fraction form
    625,457.34/938,186.28 = 152,139.78/x
  3. Step 3: Cross multiply
    625,457.34x = 938,186.28 × 152,139.78
  4. Step 4: Simplify right side
    625,457.34x = 142,735,454,238.22
  5. Step 5: Solve for x
    x = 142,735,454,238.22/625,457.34
  6. Step 6: Final answer
    x = 228,209.74

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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.