Home / 421,557.12-581,765.76-230,578.56

Finding the Fourth Proportional to 421,557.12, 581,765.76 and 230,578.56

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Solution

The fourth proportional to 421,557.12, 581,765.76 and 230,578.56 is: 318,207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,557.12 : 581,765.76 = 230,578.56 : x
  2. Step 2: Convert to fraction form
    421,557.12/581,765.76 = 230,578.56/x
  3. Step 3: Cross multiply
    421,557.12x = 581,765.76 × 230,578.56
  4. Step 4: Simplify right side
    421,557.12x = 134,142,711,198.11
  5. Step 5: Solve for x
    x = 134,142,711,198.11/421,557.12
  6. Step 6: Final answer
    x = 318,207.68

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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.