Home / 215,969.10-323,953.65-103,630.20

Finding the Fourth Proportional to 215,969.10, 323,953.65 and 103,630.20

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Solution

The fourth proportional to 215,969.10, 323,953.65 and 103,630.20 is: 155,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,969.10 : 323,953.65 = 103,630.20 : x
  2. Step 2: Convert to fraction form
    215,969.10/323,953.65 = 103,630.20/x
  3. Step 3: Cross multiply
    215,969.10x = 323,953.65 × 103,630.20
  4. Step 4: Simplify right side
    215,969.10x = 33,571,381,540.23
  5. Step 5: Solve for x
    x = 33,571,381,540.23/215,969.10
  6. Step 6: Final answer
    x = 155,445.30

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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.