Home / 420,225.61-579,910.56-229,238.95

Finding the Fourth Proportional to 420,225.61, 579,910.56 and 229,238.95

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Solution

The fourth proportional to 420,225.61, 579,910.56 and 229,238.95 is: 316,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,225.61 : 579,910.56 = 229,238.95 : x
  2. Step 2: Convert to fraction form
    420,225.61/579,910.56 = 229,238.95/x
  3. Step 3: Cross multiply
    420,225.61x = 579,910.56 × 229,238.95
  4. Step 4: Simplify right side
    420,225.61x = 132,938,087,868.31
  5. Step 5: Solve for x
    x = 132,938,087,868.31/420,225.61
  6. Step 6: Final answer
    x = 316,349.32

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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.