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Finding the Fourth Proportional to 302,520.30, 453,780.45 and 80,904.30

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Solution

The fourth proportional to 302,520.30, 453,780.45 and 80,904.30 is: 121,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,520.30 : 453,780.45 = 80,904.30 : x
  2. Step 2: Convert to fraction form
    302,520.30/453,780.45 = 80,904.30/x
  3. Step 3: Cross multiply
    302,520.30x = 453,780.45 × 80,904.30
  4. Step 4: Simplify right side
    302,520.30x = 36,712,789,660.94
  5. Step 5: Solve for x
    x = 36,712,789,660.94/302,520.30
  6. Step 6: Final answer
    x = 121,356.45

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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.