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Finding the Fourth Proportional to 490,220.60, 735,330.90 and 265,688.60

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Solution

The fourth proportional to 490,220.60, 735,330.90 and 265,688.60 is: 398,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,220.60 : 735,330.90 = 265,688.60 : x
  2. Step 2: Convert to fraction form
    490,220.60/735,330.90 = 265,688.60/x
  3. Step 3: Cross multiply
    490,220.60x = 735,330.90 × 265,688.60
  4. Step 4: Simplify right side
    490,220.60x = 195,369,037,357.74
  5. Step 5: Solve for x
    x = 195,369,037,357.74/490,220.60
  6. Step 6: Final answer
    x = 398,532.90

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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.