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Finding the Fourth Proportional to 420,545.66, 580,352.76 and 229,559.00

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Solution

The fourth proportional to 420,545.66, 580,352.76 and 229,559.00 is: 316,791.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,545.66 : 580,352.76 = 229,559.00 : x
  2. Step 2: Convert to fraction form
    420,545.66/580,352.76 = 229,559.00/x
  3. Step 3: Cross multiply
    420,545.66x = 580,352.76 × 229,559.00
  4. Step 4: Simplify right side
    420,545.66x = 133,225,196,331.08
  5. Step 5: Solve for x
    x = 133,225,196,331.08/420,545.66
  6. Step 6: Final answer
    x = 316,791.28

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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.