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Finding the Fourth Proportional to 487,064.94, 730,253.97 and 187,293.66

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Solution

The fourth proportional to 487,064.94, 730,253.97 and 187,293.66 is: 280,808.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,064.94 : 730,253.97 = 187,293.66 : x
  2. Step 2: Convert to fraction form
    487,064.94/730,253.97 = 187,293.66/x
  3. Step 3: Cross multiply
    487,064.94x = 730,253.97 × 187,293.66
  4. Step 4: Simplify right side
    487,064.94x = 136,771,938,770.83
  5. Step 5: Solve for x
    x = 136,771,938,770.83/487,064.94
  6. Step 6: Final answer
    x = 280,808.43

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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.