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Finding the Fourth Proportional to 329,760.40, 495,223.80 and 255,062.20

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Solution

The fourth proportional to 329,760.40, 495,223.80 and 255,062.20 is: 383,044.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,760.40 : 495,223.80 = 255,062.20 : x
  2. Step 2: Convert to fraction form
    329,760.40/495,223.80 = 255,062.20/x
  3. Step 3: Cross multiply
    329,760.40x = 495,223.80 × 255,062.20
  4. Step 4: Simplify right side
    329,760.40x = 126,312,871,920.36
  5. Step 5: Solve for x
    x = 126,312,871,920.36/329,760.40
  6. Step 6: Final answer
    x = 383,044.39

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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.