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Finding the Fourth Proportional to 393,548.52, 590,341.22 and 127,329.87

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Solution

The fourth proportional to 393,548.52, 590,341.22 and 127,329.87 is: 191,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,548.52 : 590,341.22 = 127,329.87 : x
  2. Step 2: Convert to fraction form
    393,548.52/590,341.22 = 127,329.87/x
  3. Step 3: Cross multiply
    393,548.52x = 590,341.22 × 127,329.87
  4. Step 4: Simplify right side
    393,548.52x = 75,168,070,798.24
  5. Step 5: Solve for x
    x = 75,168,070,798.24/393,548.52
  6. Step 6: Final answer
    x = 191,000.77

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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.