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Finding the Fourth Proportional to 359,280.80, 538,921.20 and 303,984.80

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Solution

The fourth proportional to 359,280.80, 538,921.20 and 303,984.80 is: 455,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,280.80 : 538,921.20 = 303,984.80 : x
  2. Step 2: Convert to fraction form
    359,280.80/538,921.20 = 303,984.80/x
  3. Step 3: Cross multiply
    359,280.80x = 538,921.20 × 303,984.80
  4. Step 4: Simplify right side
    359,280.80x = 163,823,853,197.76
  5. Step 5: Solve for x
    x = 163,823,853,197.76/359,280.80
  6. Step 6: Final answer
    x = 455,977.20

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Similar ratio
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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.