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Finding the Fourth Proportional to 486,121.90, 729,085.65 and 233,401.90

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Solution

The fourth proportional to 486,121.90, 729,085.65 and 233,401.90 is: 350,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,121.90 : 729,085.65 = 233,401.90 : x
  2. Step 2: Convert to fraction form
    486,121.90/729,085.65 = 233,401.90/x
  3. Step 3: Cross multiply
    486,121.90x = 729,085.65 × 233,401.90
  4. Step 4: Simplify right side
    486,121.90x = 170,169,975,972.74
  5. Step 5: Solve for x
    x = 170,169,975,972.74/486,121.90
  6. Step 6: Final answer
    x = 350,056.18

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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.