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Finding the Fourth Proportional to 487,496.60, 731,336.48 and 221,275.83

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Solution

The fourth proportional to 487,496.60, 731,336.48 and 221,275.83 is: 331,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,496.60 : 731,336.48 = 221,275.83 : x
  2. Step 2: Convert to fraction form
    487,496.60/731,336.48 = 221,275.83/x
  3. Step 3: Cross multiply
    487,496.60x = 731,336.48 × 221,275.83
  4. Step 4: Simplify right side
    487,496.60x = 161,827,086,621.28
  5. Step 5: Solve for x
    x = 161,827,086,621.28/487,496.60
  6. Step 6: Final answer
    x = 331,955.31

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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.