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Finding the Fourth Proportional to 375,430.40, 563,151.36 and 126,114.56

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Solution

The fourth proportional to 375,430.40, 563,151.36 and 126,114.56 is: 189,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,430.40 : 563,151.36 = 126,114.56 : x
  2. Step 2: Convert to fraction form
    375,430.40/563,151.36 = 126,114.56/x
  3. Step 3: Cross multiply
    375,430.40x = 563,151.36 × 126,114.56
  4. Step 4: Simplify right side
    375,430.40x = 71,021,585,979.80
  5. Step 5: Solve for x
    x = 71,021,585,979.80/375,430.40
  6. Step 6: Final answer
    x = 189,173.77

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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.