Home / 420,666.90-580,520.08-229,680.27

Finding the Fourth Proportional to 420,666.90, 580,520.08 and 229,680.27

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Solution

The fourth proportional to 420,666.90, 580,520.08 and 229,680.27 is: 316,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,666.90 : 580,520.08 = 229,680.27 : x
  2. Step 2: Convert to fraction form
    420,666.90/580,520.08 = 229,680.27/x
  3. Step 3: Cross multiply
    420,666.90x = 580,520.08 × 229,680.27
  4. Step 4: Simplify right side
    420,666.90x = 133,334,009,001.92
  5. Step 5: Solve for x
    x = 133,334,009,001.92/420,666.90
  6. Step 6: Final answer
    x = 316,958.64

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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.