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Finding the Fourth Proportional to 279,317.40, 420,012.90 and 233,698.20

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Solution

The fourth proportional to 279,317.40, 420,012.90 and 233,698.20 is: 351,414.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,317.40 : 420,012.90 = 233,698.20 : x
  2. Step 2: Convert to fraction form
    279,317.40/420,012.90 = 233,698.20/x
  3. Step 3: Cross multiply
    279,317.40x = 420,012.90 × 233,698.20
  4. Step 4: Simplify right side
    279,317.40x = 98,156,258,706.78
  5. Step 5: Solve for x
    x = 98,156,258,706.78/279,317.40
  6. Step 6: Final answer
    x = 351,414.77

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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.