Home / 420,926.80-580,891.48-229,943.36

Finding the Fourth Proportional to 420,926.80, 580,891.48 and 229,943.36

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Solution

The fourth proportional to 420,926.80, 580,891.48 and 229,943.36 is: 317,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,926.80 : 580,891.48 = 229,943.36 : x
  2. Step 2: Convert to fraction form
    420,926.80/580,891.48 = 229,943.36/x
  3. Step 3: Cross multiply
    420,926.80x = 580,891.48 × 229,943.36
  4. Step 4: Simplify right side
    420,926.80x = 133,572,138,706.57
  5. Step 5: Solve for x
    x = 133,572,138,706.57/420,926.80
  6. Step 6: Final answer
    x = 317,328.66

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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.