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Finding the Fourth Proportional to 252,665.48, 378,583.50 and 86,362.76

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Solution

The fourth proportional to 252,665.48, 378,583.50 and 86,362.76 is: 129,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,665.48 : 378,583.50 = 86,362.76 : x
  2. Step 2: Convert to fraction form
    252,665.48/378,583.50 = 86,362.76/x
  3. Step 3: Cross multiply
    252,665.48x = 378,583.50 × 86,362.76
  4. Step 4: Simplify right side
    252,665.48x = 32,695,515,950.46
  5. Step 5: Solve for x
    x = 32,695,515,950.46/252,665.48
  6. Step 6: Final answer
    x = 129,402.39

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1.5x scale

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.