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Finding the Fourth Proportional to 440,008.61, 659,689.11 and 140,316.71

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Solution

The fourth proportional to 440,008.61, 659,689.11 and 140,316.71 is: 210,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,008.61 : 659,689.11 = 140,316.71 : x
  2. Step 2: Convert to fraction form
    440,008.61/659,689.11 = 140,316.71/x
  3. Step 3: Cross multiply
    440,008.61x = 659,689.11 × 140,316.71
  4. Step 4: Simplify right side
    440,008.61x = 92,565,402,239.58
  5. Step 5: Solve for x
    x = 92,565,402,239.58/440,008.61
  6. Step 6: Final answer
    x = 210,371.80

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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.