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Finding the Fourth Proportional to 302,533.80, 453,803.30 and 86,391.97

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Solution

The fourth proportional to 302,533.80, 453,803.30 and 86,391.97 is: 129,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,533.80 : 453,803.30 = 86,391.97 : x
  2. Step 2: Convert to fraction form
    302,533.80/453,803.30 = 86,391.97/x
  3. Step 3: Cross multiply
    302,533.80x = 453,803.30 × 86,391.97
  4. Step 4: Simplify right side
    302,533.80x = 39,204,961,079.50
  5. Step 5: Solve for x
    x = 39,204,961,079.50/302,533.80
  6. Step 6: Final answer
    x = 129,588.70

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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.