Home / 420,126.95-579,675.49-238,824.55

Finding the Fourth Proportional to 420,126.95, 579,675.49 and 238,824.55

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Solution

The fourth proportional to 420,126.95, 579,675.49 and 238,824.55 is: 329,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,126.95 : 579,675.49 = 238,824.55 : x
  2. Step 2: Convert to fraction form
    420,126.95/579,675.49 = 238,824.55/x
  3. Step 3: Cross multiply
    420,126.95x = 579,675.49 × 238,824.55
  4. Step 4: Simplify right side
    420,126.95x = 138,440,738,172.81
  5. Step 5: Solve for x
    x = 138,440,738,172.81/420,126.95
  6. Step 6: Final answer
    x = 329,521.20

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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.