Home / 420,260.25-579,975.33-238,988.52

Finding the Fourth Proportional to 420,260.25, 579,975.33 and 238,988.52

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Solution

The fourth proportional to 420,260.25, 579,975.33 and 238,988.52 is: 329,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,260.25 : 579,975.33 = 238,988.52 : x
  2. Step 2: Convert to fraction form
    420,260.25/579,975.33 = 238,988.52/x
  3. Step 3: Cross multiply
    420,260.25x = 579,975.33 × 238,988.52
  4. Step 4: Simplify right side
    420,260.25x = 138,607,445,753.21
  5. Step 5: Solve for x
    x = 138,607,445,753.21/420,260.25
  6. Step 6: Final answer
    x = 329,813.36

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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.