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Finding the Fourth Proportional to 215,995.40, 323,949.90 and 103,675.40

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Solution

The fourth proportional to 215,995.40, 323,949.90 and 103,675.40 is: 155,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,995.40 : 323,949.90 = 103,675.40 : x
  2. Step 2: Convert to fraction form
    215,995.40/323,949.90 = 103,675.40/x
  3. Step 3: Cross multiply
    215,995.40x = 323,949.90 × 103,675.40
  4. Step 4: Simplify right side
    215,995.40x = 33,585,635,462.46
  5. Step 5: Solve for x
    x = 33,585,635,462.46/215,995.40
  6. Step 6: Final answer
    x = 155,492.36

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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.