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Finding the Fourth Proportional to 243,885.65, 365,831.58 and 86,003.39

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Solution

The fourth proportional to 243,885.65, 365,831.58 and 86,003.39 is: 129,006.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,885.65 : 365,831.58 = 86,003.39 : x
  2. Step 2: Convert to fraction form
    243,885.65/365,831.58 = 86,003.39/x
  3. Step 3: Cross multiply
    243,885.65x = 365,831.58 × 86,003.39
  4. Step 4: Simplify right side
    243,885.65x = 31,462,754,219.90
  5. Step 5: Solve for x
    x = 31,462,754,219.90/243,885.65
  6. Step 6: Final answer
    x = 129,006.18

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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.