Home / 285,941.16-428,914.85-86,263.29

Finding the Fourth Proportional to 285,941.16, 428,914.85 and 86,263.29

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Solution

The fourth proportional to 285,941.16, 428,914.85 and 86,263.29 is: 129,395.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,941.16 : 428,914.85 = 86,263.29 : x
  2. Step 2: Convert to fraction form
    285,941.16/428,914.85 = 86,263.29/x
  3. Step 3: Cross multiply
    285,941.16x = 428,914.85 × 86,263.29
  4. Step 4: Simplify right side
    285,941.16x = 36,999,605,659.54
  5. Step 5: Solve for x
    x = 36,999,605,659.54/285,941.16
  6. Step 6: Final answer
    x = 129,395.87

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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.