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Finding the Fourth Proportional to 220,878.52, 304,448.34 and 156,264.28

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Solution

The fourth proportional to 220,878.52, 304,448.34 and 156,264.28 is: 215,387.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,878.52 : 304,448.34 = 156,264.28 : x
  2. Step 2: Convert to fraction form
    220,878.52/304,448.34 = 156,264.28/x
  3. Step 3: Cross multiply
    220,878.52x = 304,448.34 × 156,264.28
  4. Step 4: Simplify right side
    220,878.52x = 47,574,400,647.30
  5. Step 5: Solve for x
    x = 47,574,400,647.30/220,878.52
  6. Step 6: Final answer
    x = 215,387.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.