Home / 420,149.04-579,854.69-238,888.13

Finding the Fourth Proportional to 420,149.04, 579,854.69 and 238,888.13

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Solution

The fourth proportional to 420,149.04, 579,854.69 and 238,888.13 is: 329,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,149.04 : 579,854.69 = 238,888.13 : x
  2. Step 2: Convert to fraction form
    420,149.04/579,854.69 = 238,888.13/x
  3. Step 3: Cross multiply
    420,149.04x = 579,854.69 × 238,888.13
  4. Step 4: Simplify right side
    420,149.04x = 138,520,399,367.95
  5. Step 5: Solve for x
    x = 138,520,399,367.95/420,149.04
  6. Step 6: Final answer
    x = 329,693.48

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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.