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Finding the Fourth Proportional to 298,048.40, 447,151.80 and 129,496.40

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Solution

The fourth proportional to 298,048.40, 447,151.80 and 129,496.40 is: 194,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,048.40 : 447,151.80 = 129,496.40 : x
  2. Step 2: Convert to fraction form
    298,048.40/447,151.80 = 129,496.40/x
  3. Step 3: Cross multiply
    298,048.40x = 447,151.80 × 129,496.40
  4. Step 4: Simplify right side
    298,048.40x = 57,904,548,353.52
  5. Step 5: Solve for x
    x = 57,904,548,353.52/298,048.40
  6. Step 6: Final answer
    x = 194,279.01

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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.