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Finding the Fourth Proportional to 342,607.25, 513,986.40 and 102,711.57

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Solution

The fourth proportional to 342,607.25, 513,986.40 and 102,711.57 is: 154,090.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,607.25 : 513,986.40 = 102,711.57 : x
  2. Step 2: Convert to fraction form
    342,607.25/513,986.40 = 102,711.57/x
  3. Step 3: Cross multiply
    342,607.25x = 513,986.40 × 102,711.57
  4. Step 4: Simplify right side
    342,607.25x = 52,792,350,102.65
  5. Step 5: Solve for x
    x = 52,792,350,102.65/342,607.25
  6. Step 6: Final answer
    x = 154,090.00

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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.