Home / 402,344.29-555,226.19-218,578.11

Finding the Fourth Proportional to 402,344.29, 555,226.19 and 218,578.11

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Solution

The fourth proportional to 402,344.29, 555,226.19 and 218,578.11 is: 301,632.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,344.29 : 555,226.19 = 218,578.11 : x
  2. Step 2: Convert to fraction form
    402,344.29/555,226.19 = 218,578.11/x
  3. Step 3: Cross multiply
    402,344.29x = 555,226.19 × 218,578.11
  4. Step 4: Simplify right side
    402,344.29x = 121,360,294,048.47
  5. Step 5: Solve for x
    x = 121,360,294,048.47/402,344.29
  6. Step 6: Final answer
    x = 301,632.95

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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.