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Finding the Fourth Proportional to 487,219.44, 730,888.56 and 206,641.92

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Solution

The fourth proportional to 487,219.44, 730,888.56 and 206,641.92 is: 309,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,219.44 : 730,888.56 = 206,641.92 : x
  2. Step 2: Convert to fraction form
    487,219.44/730,888.56 = 206,641.92/x
  3. Step 3: Cross multiply
    487,219.44x = 730,888.56 × 206,641.92
  4. Step 4: Simplify right side
    487,219.44x = 151,032,215,344.44
  5. Step 5: Solve for x
    x = 151,032,215,344.44/487,219.44
  6. Step 6: Final answer
    x = 309,988.07

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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.