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Finding the Fourth Proportional to 371,756.88, 512,985.93 and 218,785.92

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Solution

The fourth proportional to 371,756.88, 512,985.93 and 218,785.92 is: 301,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,756.88 : 512,985.93 = 218,785.92 : x
  2. Step 2: Convert to fraction form
    371,756.88/512,985.93 = 218,785.92/x
  3. Step 3: Cross multiply
    371,756.88x = 512,985.93 × 218,785.92
  4. Step 4: Simplify right side
    371,756.88x = 112,234,098,642.11
  5. Step 5: Solve for x
    x = 112,234,098,642.11/371,756.88
  6. Step 6: Final answer
    x = 301,901.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.