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Finding the Fourth Proportional to 487,216.71, 730,817.01 and 145,660.93

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Solution

The fourth proportional to 487,216.71, 730,817.01 and 145,660.93 is: 218,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,216.71 : 730,817.01 = 145,660.93 : x
  2. Step 2: Convert to fraction form
    487,216.71/730,817.01 = 145,660.93/x
  3. Step 3: Cross multiply
    487,216.71x = 730,817.01 × 145,660.93
  4. Step 4: Simplify right side
    487,216.71x = 106,451,481,682.33
  5. Step 5: Solve for x
    x = 106,451,481,682.33/487,216.71
  6. Step 6: Final answer
    x = 218,488.98

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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.