Home / 217,885.10-326,827.65-138,764.30

Finding the Fourth Proportional to 217,885.10, 326,827.65 and 138,764.30

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Solution

The fourth proportional to 217,885.10, 326,827.65 and 138,764.30 is: 208,146.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,885.10 : 326,827.65 = 138,764.30 : x
  2. Step 2: Convert to fraction form
    217,885.10/326,827.65 = 138,764.30/x
  3. Step 3: Cross multiply
    217,885.10x = 326,827.65 × 138,764.30
  4. Step 4: Simplify right side
    217,885.10x = 45,352,010,072.90
  5. Step 5: Solve for x
    x = 45,352,010,072.90/217,885.10
  6. Step 6: Final answer
    x = 208,146.45

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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.