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Finding the Fourth Proportional to 494,549.20, 741,750.90 and 139,599.10

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Solution

The fourth proportional to 494,549.20, 741,750.90 and 139,599.10 is: 209,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,549.20 : 741,750.90 = 139,599.10 : x
  2. Step 2: Convert to fraction form
    494,549.20/741,750.90 = 139,599.10/x
  3. Step 3: Cross multiply
    494,549.20x = 741,750.90 × 139,599.10
  4. Step 4: Simplify right side
    494,549.20x = 103,547,758,064.19
  5. Step 5: Solve for x
    x = 103,547,758,064.19/494,549.20
  6. Step 6: Final answer
    x = 209,378.07

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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.