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Finding the Fourth Proportional to 402,442.57, 555,139.48 and 251,277.13

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Solution

The fourth proportional to 402,442.57, 555,139.48 and 251,277.13 is: 346,618.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,442.57 : 555,139.48 = 251,277.13 : x
  2. Step 2: Convert to fraction form
    402,442.57/555,139.48 = 251,277.13/x
  3. Step 3: Cross multiply
    402,442.57x = 555,139.48 × 251,277.13
  4. Step 4: Simplify right side
    402,442.57x = 139,493,853,268.05
  5. Step 5: Solve for x
    x = 139,493,853,268.05/402,442.57
  6. Step 6: Final answer
    x = 346,618.04

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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.