Home / 420,126.12-579,771.48-238,838.13

Finding the Fourth Proportional to 420,126.12, 579,771.48 and 238,838.13

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Solution

The fourth proportional to 420,126.12, 579,771.48 and 238,838.13 is: 329,595.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,126.12 : 579,771.48 = 238,838.13 : x
  2. Step 2: Convert to fraction form
    420,126.12/579,771.48 = 238,838.13/x
  3. Step 3: Cross multiply
    420,126.12x = 579,771.48 × 238,838.13
  4. Step 4: Simplify right side
    420,126.12x = 138,471,536,110.53
  5. Step 5: Solve for x
    x = 138,471,536,110.53/420,126.12
  6. Step 6: Final answer
    x = 329,595.16

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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.