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Finding the Fourth Proportional to 420,696.98, 580,562.55 and 229,706.30

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Solution

The fourth proportional to 420,696.98, 580,562.55 and 229,706.30 is: 316,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,696.98 : 580,562.55 = 229,706.30 : x
  2. Step 2: Convert to fraction form
    420,696.98/580,562.55 = 229,706.30/x
  3. Step 3: Cross multiply
    420,696.98x = 580,562.55 × 229,706.30
  4. Step 4: Simplify right side
    420,696.98x = 133,358,875,279.07
  5. Step 5: Solve for x
    x = 133,358,875,279.07/420,696.98
  6. Step 6: Final answer
    x = 316,995.09

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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.