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Finding the Fourth Proportional to 291,732.80, 437,599.20 and 70,116.80

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Solution

The fourth proportional to 291,732.80, 437,599.20 and 70,116.80 is: 105,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,732.80 : 437,599.20 = 70,116.80 : x
  2. Step 2: Convert to fraction form
    291,732.80/437,599.20 = 70,116.80/x
  3. Step 3: Cross multiply
    291,732.80x = 437,599.20 × 70,116.80
  4. Step 4: Simplify right side
    291,732.80x = 30,683,055,586.56
  5. Step 5: Solve for x
    x = 30,683,055,586.56/291,732.80
  6. Step 6: Final answer
    x = 105,175.20

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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.