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Finding the Fourth Proportional to 300,332.70, 450,366.18 and 89,931.42

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Solution

The fourth proportional to 300,332.70, 450,366.18 and 89,931.42 is: 134,857.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,332.70 : 450,366.18 = 89,931.42 : x
  2. Step 2: Convert to fraction form
    300,332.70/450,366.18 = 89,931.42/x
  3. Step 3: Cross multiply
    300,332.70x = 450,366.18 × 89,931.42
  4. Step 4: Simplify right side
    300,332.70x = 40,502,070,087.38
  5. Step 5: Solve for x
    x = 40,502,070,087.38/300,332.70
  6. Step 6: Final answer
    x = 134,857.34

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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.