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Finding the Fourth Proportional to 490,223.70, 735,335.55 and 349,218.90

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Solution

The fourth proportional to 490,223.70, 735,335.55 and 349,218.90 is: 523,828.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,223.70 : 735,335.55 = 349,218.90 : x
  2. Step 2: Convert to fraction form
    490,223.70/735,335.55 = 349,218.90/x
  3. Step 3: Cross multiply
    490,223.70x = 735,335.55 × 349,218.90
  4. Step 4: Simplify right side
    490,223.70x = 256,793,071,901.90
  5. Step 5: Solve for x
    x = 256,793,071,901.90/490,223.70
  6. Step 6: Final answer
    x = 523,828.35

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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.