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Finding the Fourth Proportional to 457,886.79, 631,861.56 and 253,945.80

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Solution

The fourth proportional to 457,886.79, 631,861.56 and 253,945.80 is: 350,432.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,886.79 : 631,861.56 = 253,945.80 : x
  2. Step 2: Convert to fraction form
    457,886.79/631,861.56 = 253,945.80/x
  3. Step 3: Cross multiply
    457,886.79x = 631,861.56 × 253,945.80
  4. Step 4: Simplify right side
    457,886.79x = 160,458,589,343.45
  5. Step 5: Solve for x
    x = 160,458,589,343.45/457,886.79
  6. Step 6: Final answer
    x = 350,432.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.