Home / 742,217.49-1,113,371.15-209,778.35

Finding the Fourth Proportional to 742,217.49, 1,113,371.15 and 209,778.35

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Solution

The fourth proportional to 742,217.49, 1,113,371.15 and 209,778.35 is: 314,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,217.49 : 1,113,371.15 = 209,778.35 : x
  2. Step 2: Convert to fraction form
    742,217.49/1,113,371.15 = 209,778.35/x
  3. Step 3: Cross multiply
    742,217.49x = 1,113,371.15 × 209,778.35
  4. Step 4: Simplify right side
    742,217.49x = 233,561,156,168.86
  5. Step 5: Solve for x
    x = 233,561,156,168.86/742,217.49
  6. Step 6: Final answer
    x = 314,680.21

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Double scale
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Similar ratio
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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.