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Finding the Fourth Proportional to 199,422.60, 299,328.30 and 99,695.40

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Solution

The fourth proportional to 199,422.60, 299,328.30 and 99,695.40 is: 149,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,422.60 : 299,328.30 = 99,695.40 : x
  2. Step 2: Convert to fraction form
    199,422.60/299,328.30 = 99,695.40/x
  3. Step 3: Cross multiply
    199,422.60x = 299,328.30 × 99,695.40
  4. Step 4: Simplify right side
    199,422.60x = 29,841,654,599.82
  5. Step 5: Solve for x
    x = 29,841,654,599.82/199,422.60
  6. Step 6: Final answer
    x = 149,640.28

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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.