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Finding the Fourth Proportional to 487,260.72, 730,790.64 and 187,638.48

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Solution

The fourth proportional to 487,260.72, 730,790.64 and 187,638.48 is: 281,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,260.72 : 730,790.64 = 187,638.48 : x
  2. Step 2: Convert to fraction form
    487,260.72/730,790.64 = 187,638.48/x
  3. Step 3: Cross multiply
    487,260.72x = 730,790.64 × 187,638.48
  4. Step 4: Simplify right side
    487,260.72x = 137,124,444,887.83
  5. Step 5: Solve for x
    x = 137,124,444,887.83/487,260.72
  6. Step 6: Final answer
    x = 281,419.04

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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.