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Finding the Fourth Proportional to 325,129.77, 487,063.67 and 239,585.40

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Solution

The fourth proportional to 325,129.77, 487,063.67 and 239,585.40 is: 358,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,129.77 : 487,063.67 = 239,585.40 : x
  2. Step 2: Convert to fraction form
    325,129.77/487,063.67 = 239,585.40/x
  3. Step 3: Cross multiply
    325,129.77x = 487,063.67 × 239,585.40
  4. Step 4: Simplify right side
    325,129.77x = 116,693,343,004.49
  5. Step 5: Solve for x
    x = 116,693,343,004.49/325,129.77
  6. Step 6: Final answer
    x = 358,913.13

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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.