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Finding the Fourth Proportional to 487,386.72, 730,840.32 and 171,797.76

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Solution

The fourth proportional to 487,386.72, 730,840.32 and 171,797.76 is: 257,612.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,386.72 : 730,840.32 = 171,797.76 : x
  2. Step 2: Convert to fraction form
    487,386.72/730,840.32 = 171,797.76/x
  3. Step 3: Cross multiply
    487,386.72x = 730,840.32 × 171,797.76
  4. Step 4: Simplify right side
    487,386.72x = 125,556,729,893.68
  5. Step 5: Solve for x
    x = 125,556,729,893.68/487,386.72
  6. Step 6: Final answer
    x = 257,612.13

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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.