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Finding the Fourth Proportional to 302,378.40, 453,470.90 and 99,936.72

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Solution

The fourth proportional to 302,378.40, 453,470.90 and 99,936.72 is: 149,873.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,378.40 : 453,470.90 = 99,936.72 : x
  2. Step 2: Convert to fraction form
    302,378.40/453,470.90 = 99,936.72/x
  3. Step 3: Cross multiply
    302,378.40x = 453,470.90 × 99,936.72
  4. Step 4: Simplify right side
    302,378.40x = 45,318,393,861.76
  5. Step 5: Solve for x
    x = 45,318,393,861.76/302,378.40
  6. Step 6: Final answer
    x = 149,873.12

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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.