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Finding the Fourth Proportional to 499,790.86, 749,686.29 and 144,805.12

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Solution

The fourth proportional to 499,790.86, 749,686.29 and 144,805.12 is: 217,207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,790.86 : 749,686.29 = 144,805.12 : x
  2. Step 2: Convert to fraction form
    499,790.86/749,686.29 = 144,805.12/x
  3. Step 3: Cross multiply
    499,790.86x = 749,686.29 × 144,805.12
  4. Step 4: Simplify right side
    499,790.86x = 108,558,413,185.81
  5. Step 5: Solve for x
    x = 108,558,413,185.81/499,790.86
  6. Step 6: Final answer
    x = 217,207.68

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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.