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Finding the Fourth Proportional to 243,839.65, 365,664.71 and 83,885.21

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Solution

The fourth proportional to 243,839.65, 365,664.71 and 83,885.21 is: 125,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,839.65 : 365,664.71 = 83,885.21 : x
  2. Step 2: Convert to fraction form
    243,839.65/365,664.71 = 83,885.21/x
  3. Step 3: Cross multiply
    243,839.65x = 365,664.71 × 83,885.21
  4. Step 4: Simplify right side
    243,839.65x = 30,673,860,987.94
  5. Step 5: Solve for x
    x = 30,673,860,987.94/243,839.65
  6. Step 6: Final answer
    x = 125,795.21

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1.5x scale

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.