Home / 420,675.86-580,528.29-229,688.66

Finding the Fourth Proportional to 420,675.86, 580,528.29 and 229,688.66

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Solution

The fourth proportional to 420,675.86, 580,528.29 and 229,688.66 is: 316,967.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,675.86 : 580,528.29 = 229,688.66 : x
  2. Step 2: Convert to fraction form
    420,675.86/580,528.29 = 229,688.66/x
  3. Step 3: Cross multiply
    420,675.86x = 580,528.29 × 229,688.66
  4. Step 4: Simplify right side
    420,675.86x = 133,340,765,022.19
  5. Step 5: Solve for x
    x = 133,340,765,022.19/420,675.86
  6. Step 6: Final answer
    x = 316,967.95

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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.