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Finding the Fourth Proportional to 400,649.64, 552,720.06 and 239,423.64

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Solution

The fourth proportional to 400,649.64, 552,720.06 and 239,423.64 is: 330,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,649.64 : 552,720.06 = 239,423.64 : x
  2. Step 2: Convert to fraction form
    400,649.64/552,720.06 = 239,423.64/x
  3. Step 3: Cross multiply
    400,649.64x = 552,720.06 × 239,423.64
  4. Step 4: Simplify right side
    400,649.64x = 132,334,248,666.22
  5. Step 5: Solve for x
    x = 132,334,248,666.22/400,649.64
  6. Step 6: Final answer
    x = 330,299.18

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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.