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Finding the Fourth Proportional to 420,366.02, 580,119.11 and 229,389.89

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Solution

The fourth proportional to 420,366.02, 580,119.11 and 229,389.89 is: 316,565.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,366.02 : 580,119.11 = 229,389.89 : x
  2. Step 2: Convert to fraction form
    420,366.02/580,119.11 = 229,389.89/x
  3. Step 3: Cross multiply
    420,366.02x = 580,119.11 × 229,389.89
  4. Step 4: Simplify right side
    420,366.02x = 133,073,454,782.25
  5. Step 5: Solve for x
    x = 133,073,454,782.25/420,366.02
  6. Step 6: Final answer
    x = 316,565.68

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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.