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Finding the Fourth Proportional to 310,480.80, 465,721.20 and 216,002.40

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Solution

The fourth proportional to 310,480.80, 465,721.20 and 216,002.40 is: 324,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,480.80 : 465,721.20 = 216,002.40 : x
  2. Step 2: Convert to fraction form
    310,480.80/465,721.20 = 216,002.40/x
  3. Step 3: Cross multiply
    310,480.80x = 465,721.20 × 216,002.40
  4. Step 4: Simplify right side
    310,480.80x = 100,596,896,930.88
  5. Step 5: Solve for x
    x = 100,596,896,930.88/310,480.80
  6. Step 6: Final answer
    x = 324,003.60

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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.