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Finding the Fourth Proportional to 487,688.48, 731,458.81 and 132,730.16

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Solution

The fourth proportional to 487,688.48, 731,458.81 and 132,730.16 is: 199,075.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,688.48 : 731,458.81 = 132,730.16 : x
  2. Step 2: Convert to fraction form
    487,688.48/731,458.81 = 132,730.16/x
  3. Step 3: Cross multiply
    487,688.48x = 731,458.81 × 132,730.16
  4. Step 4: Simplify right side
    487,688.48x = 97,086,646,879.27
  5. Step 5: Solve for x
    x = 97,086,646,879.27/487,688.48
  6. Step 6: Final answer
    x = 199,075.13

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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.