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Finding the Fourth Proportional to 483,315.20, 724,972.80 and 315,353.60

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Solution

The fourth proportional to 483,315.20, 724,972.80 and 315,353.60 is: 473,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,315.20 : 724,972.80 = 315,353.60 : x
  2. Step 2: Convert to fraction form
    483,315.20/724,972.80 = 315,353.60/x
  3. Step 3: Cross multiply
    483,315.20x = 724,972.80 × 315,353.60
  4. Step 4: Simplify right side
    483,315.20x = 228,622,782,382.08
  5. Step 5: Solve for x
    x = 228,622,782,382.08/483,315.20
  6. Step 6: Final answer
    x = 473,030.40

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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.