Home / 420,032.22-579,623.42-238,720.20

Finding the Fourth Proportional to 420,032.22, 579,623.42 and 238,720.20

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Solution

The fourth proportional to 420,032.22, 579,623.42 and 238,720.20 is: 329,421.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,032.22 : 579,623.42 = 238,720.20 : x
  2. Step 2: Convert to fraction form
    420,032.22/579,623.42 = 238,720.20/x
  3. Step 3: Cross multiply
    420,032.22x = 579,623.42 × 238,720.20
  4. Step 4: Simplify right side
    420,032.22x = 138,367,818,747.08
  5. Step 5: Solve for x
    x = 138,367,818,747.08/420,032.22
  6. Step 6: Final answer
    x = 329,421.92

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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.