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Finding the Fourth Proportional to 355,313.90, 532,946.55 and 115,424.30

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Solution

The fourth proportional to 355,313.90, 532,946.55 and 115,424.30 is: 173,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,313.90 : 532,946.55 = 115,424.30 : x
  2. Step 2: Convert to fraction form
    355,313.90/532,946.55 = 115,424.30/x
  3. Step 3: Cross multiply
    355,313.90x = 532,946.55 × 115,424.30
  4. Step 4: Simplify right side
    355,313.90x = 61,514,982,471.17
  5. Step 5: Solve for x
    x = 61,514,982,471.17/355,313.90
  6. Step 6: Final answer
    x = 173,128.56

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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.