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Finding the Fourth Proportional to 274,448.20, 411,672.30 and 77,456.20

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Solution

The fourth proportional to 274,448.20, 411,672.30 and 77,456.20 is: 116,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,448.20 : 411,672.30 = 77,456.20 : x
  2. Step 2: Convert to fraction form
    274,448.20/411,672.30 = 77,456.20/x
  3. Step 3: Cross multiply
    274,448.20x = 411,672.30 × 77,456.20
  4. Step 4: Simplify right side
    274,448.20x = 31,886,572,003.26
  5. Step 5: Solve for x
    x = 31,886,572,003.26/274,448.20
  6. Step 6: Final answer
    x = 116,184.30

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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.