Home / 420,247.39-579,938.71-238,959.37

Finding the Fourth Proportional to 420,247.39, 579,938.71 and 238,959.37

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Solution

The fourth proportional to 420,247.39, 579,938.71 and 238,959.37 is: 329,762.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,247.39 : 579,938.71 = 238,959.37 : x
  2. Step 2: Convert to fraction form
    420,247.39/579,938.71 = 238,959.37/x
  3. Step 3: Cross multiply
    420,247.39x = 579,938.71 × 238,959.37
  4. Step 4: Simplify right side
    420,247.39x = 138,581,784,685.72
  5. Step 5: Solve for x
    x = 138,581,784,685.72/420,247.39
  6. Step 6: Final answer
    x = 329,762.39

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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.