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Finding the Fourth Proportional to 208,008.93, 312,060.14 and 65,862.71

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Solution

The fourth proportional to 208,008.93, 312,060.14 and 65,862.71 is: 98,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008.93 : 312,060.14 = 65,862.71 : x
  2. Step 2: Convert to fraction form
    208,008.93/312,060.14 = 65,862.71/x
  3. Step 3: Cross multiply
    208,008.93x = 312,060.14 × 65,862.71
  4. Step 4: Simplify right side
    208,008.93x = 20,553,126,503.38
  5. Step 5: Solve for x
    x = 20,553,126,503.38/208,008.93
  6. Step 6: Final answer
    x = 98,808.87

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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.