Home / 261,964.80-392,986.88-133,810.72

Finding the Fourth Proportional to 261,964.80, 392,986.88 and 133,810.72

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Solution

The fourth proportional to 261,964.80, 392,986.88 and 133,810.72 is: 200,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,964.80 : 392,986.88 = 133,810.72 : x
  2. Step 2: Convert to fraction form
    261,964.80/392,986.88 = 133,810.72/x
  3. Step 3: Cross multiply
    261,964.80x = 392,986.88 × 133,810.72
  4. Step 4: Simplify right side
    261,964.80x = 52,585,857,363.35
  5. Step 5: Solve for x
    x = 52,585,857,363.35/261,964.80
  6. Step 6: Final answer
    x = 200,736.35

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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.