Home / 420,225.61-579,938.75-238,954.41

Finding the Fourth Proportional to 420,225.61, 579,938.75 and 238,954.41

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Solution

The fourth proportional to 420,225.61, 579,938.75 and 238,954.41 is: 329,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,225.61 : 579,938.75 = 238,954.41 : x
  2. Step 2: Convert to fraction form
    420,225.61/579,938.75 = 238,954.41/x
  3. Step 3: Cross multiply
    420,225.61x = 579,938.75 × 238,954.41
  4. Step 4: Simplify right side
    420,225.61x = 138,578,917,747.92
  5. Step 5: Solve for x
    x = 138,578,917,747.92/420,225.61
  6. Step 6: Final answer
    x = 329,772.66

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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.