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Finding the Fourth Proportional to 400,302.64, 552,313.92 and 239,086.72

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Solution

The fourth proportional to 400,302.64, 552,313.92 and 239,086.72 is: 329,877.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,302.64 : 552,313.92 = 239,086.72 : x
  2. Step 2: Convert to fraction form
    400,302.64/552,313.92 = 239,086.72/x
  3. Step 3: Cross multiply
    400,302.64x = 552,313.92 × 239,086.72
  4. Step 4: Simplify right side
    400,302.64x = 132,050,923,543.14
  5. Step 5: Solve for x
    x = 132,050,923,543.14/400,302.64
  6. Step 6: Final answer
    x = 329,877.72

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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.