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Finding the Fourth Proportional to 393,637.16, 590,549.43 and 127,397.67

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Solution

The fourth proportional to 393,637.16, 590,549.43 and 127,397.67 is: 191,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,637.16 : 590,549.43 = 127,397.67 : x
  2. Step 2: Convert to fraction form
    393,637.16/590,549.43 = 127,397.67/x
  3. Step 3: Cross multiply
    393,637.16x = 590,549.43 × 127,397.67
  4. Step 4: Simplify right side
    393,637.16x = 75,234,621,590.10
  5. Step 5: Solve for x
    x = 75,234,621,590.10/393,637.16
  6. Step 6: Final answer
    x = 191,126.83

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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.