Home / 261,979.40-392,969.10-156,744.20

Finding the Fourth Proportional to 261,979.40, 392,969.10 and 156,744.20

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Solution

The fourth proportional to 261,979.40, 392,969.10 and 156,744.20 is: 235,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,979.40 : 392,969.10 = 156,744.20 : x
  2. Step 2: Convert to fraction form
    261,979.40/392,969.10 = 156,744.20/x
  3. Step 3: Cross multiply
    261,979.40x = 392,969.10 × 156,744.20
  4. Step 4: Simplify right side
    261,979.40x = 61,595,627,204.22
  5. Step 5: Solve for x
    x = 61,595,627,204.22/261,979.40
  6. Step 6: Final answer
    x = 235,116.30

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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.