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Finding the Fourth Proportional to 420,559.48, 580,355.58 and 229,572.64

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Solution

The fourth proportional to 420,559.48, 580,355.58 and 229,572.64 is: 316,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,559.48 : 580,355.58 = 229,572.64 : x
  2. Step 2: Convert to fraction form
    420,559.48/580,355.58 = 229,572.64/x
  3. Step 3: Cross multiply
    420,559.48x = 580,355.58 × 229,572.64
  4. Step 4: Simplify right side
    420,559.48x = 133,233,762,639.33
  5. Step 5: Solve for x
    x = 133,233,762,639.33/420,559.48
  6. Step 6: Final answer
    x = 316,801.23

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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.