Home / 402,275.26-555,137.78-218,512.36

Finding the Fourth Proportional to 402,275.26, 555,137.78 and 218,512.36

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Solution

The fourth proportional to 402,275.26, 555,137.78 and 218,512.36 is: 301,545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,275.26 : 555,137.78 = 218,512.36 : x
  2. Step 2: Convert to fraction form
    402,275.26/555,137.78 = 218,512.36/x
  3. Step 3: Cross multiply
    402,275.26x = 555,137.78 × 218,512.36
  4. Step 4: Simplify right side
    402,275.26x = 121,304,466,432.96
  5. Step 5: Solve for x
    x = 121,304,466,432.96/402,275.26
  6. Step 6: Final answer
    x = 301,545.93

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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.