Home / 402,505.20-555,445.41-230,417.46

Finding the Fourth Proportional to 402,505.20, 555,445.41 and 230,417.46

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Solution

The fourth proportional to 402,505.20, 555,445.41 and 230,417.46 is: 317,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,505.20 : 555,445.41 = 230,417.46 : x
  2. Step 2: Convert to fraction form
    402,505.20/555,445.41 = 230,417.46/x
  3. Step 3: Cross multiply
    402,505.20x = 555,445.41 × 230,417.46
  4. Step 4: Simplify right side
    402,505.20x = 127,984,320,540.86
  5. Step 5: Solve for x
    x = 127,984,320,540.86/402,505.20
  6. Step 6: Final answer
    x = 317,969.36

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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.