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Finding the Fourth Proportional to 880,168.30, 1,320,252.45 and 215,320.30

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Solution

The fourth proportional to 880,168.30, 1,320,252.45 and 215,320.30 is: 322,980.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,168.30 : 1,320,252.45 = 215,320.30 : x
  2. Step 2: Convert to fraction form
    880,168.30/1,320,252.45 = 215,320.30/x
  3. Step 3: Cross multiply
    880,168.30x = 1,320,252.45 × 215,320.30
  4. Step 4: Simplify right side
    880,168.30x = 284,277,153,609.74
  5. Step 5: Solve for x
    x = 284,277,153,609.74/880,168.30
  6. Step 6: Final answer
    x = 322,980.45

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Similar ratio
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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.