Home / 285,652,081.92-428,518,473.76-91,518,085.76

Finding the Fourth Proportional to 285,652,081.92, 428,518,473.76 and 91,518,085.76

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Solution

The fourth proportional to 285,652,081.92, 428,518,473.76 and 91,518,085.76 is: 137,290,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,652,081.92 : 428,518,473.76 = 91,518,085.76 : x
  2. Step 2: Convert to fraction form
    285,652,081.92/428,518,473.76 = 91,518,085.76/x
  3. Step 3: Cross multiply
    285,652,081.92x = 428,518,473.76 × 91,518,085.76
  4. Step 4: Simplify right side
    285,652,081.92x = 39,217,190,431,311,992
  5. Step 5: Solve for x
    x = 39,217,190,431,311,992/285,652,081.92
  6. Step 6: Final answer
    x = 137,290,056.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.