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Finding the Fourth Proportional to 399,875.08, 551,609.22 and 256,475.56

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Solution

The fourth proportional to 399,875.08, 551,609.22 and 256,475.56 is: 353,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,875.08 : 551,609.22 = 256,475.56 : x
  2. Step 2: Convert to fraction form
    399,875.08/551,609.22 = 256,475.56/x
  3. Step 3: Cross multiply
    399,875.08x = 551,609.22 × 256,475.56
  4. Step 4: Simplify right side
    399,875.08x = 141,474,283,600.66
  5. Step 5: Solve for x
    x = 141,474,283,600.66/399,875.08
  6. Step 6: Final answer
    x = 353,796.20

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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.