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Finding the Fourth Proportional to 500,246.61, 750,390.67 and 145,260.63

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Solution

The fourth proportional to 500,246.61, 750,390.67 and 145,260.63 is: 217,896.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,246.61 : 750,390.67 = 145,260.63 : x
  2. Step 2: Convert to fraction form
    500,246.61/750,390.67 = 145,260.63/x
  3. Step 3: Cross multiply
    500,246.61x = 750,390.67 × 145,260.63
  4. Step 4: Simplify right side
    500,246.61x = 109,002,217,718.37
  5. Step 5: Solve for x
    x = 109,002,217,718.37/500,246.61
  6. Step 6: Final answer
    x = 217,896.97

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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.