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Finding the Fourth Proportional to 302,486.76, 453,730.14 and 80,865

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Solution

The fourth proportional to 302,486.76, 453,730.14 and 80,865 is: 121,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,486.76 : 453,730.14 = 80,865 : x
  2. Step 2: Convert to fraction form
    302,486.76/453,730.14 = 80,865/x
  3. Step 3: Cross multiply
    302,486.76x = 453,730.14 × 80,865
  4. Step 4: Simplify right side
    302,486.76x = 36,690,887,771.10
  5. Step 5: Solve for x
    x = 36,690,887,771.10/302,486.76
  6. Step 6: Final answer
    x = 121,297.50

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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.