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Finding the Fourth Proportional to 416,407.62, 574,642.40 and 225,420.87

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Solution

The fourth proportional to 416,407.62, 574,642.40 and 225,420.87 is: 311,080.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,407.62 : 574,642.40 = 225,420.87 : x
  2. Step 2: Convert to fraction form
    416,407.62/574,642.40 = 225,420.87/x
  3. Step 3: Cross multiply
    416,407.62x = 574,642.40 × 225,420.87
  4. Step 4: Simplify right side
    416,407.62x = 129,536,388,619.78
  5. Step 5: Solve for x
    x = 129,536,388,619.78/416,407.62
  6. Step 6: Final answer
    x = 311,080.74

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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.