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Finding the Fourth Proportional to 768,902.60, 1,153,353.90 and 207,937.10

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Solution

The fourth proportional to 768,902.60, 1,153,353.90 and 207,937.10 is: 311,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,902.60 : 1,153,353.90 = 207,937.10 : x
  2. Step 2: Convert to fraction form
    768,902.60/1,153,353.90 = 207,937.10/x
  3. Step 3: Cross multiply
    768,902.60x = 1,153,353.90 × 207,937.10
  4. Step 4: Simplify right side
    768,902.60x = 239,825,065,239.69
  5. Step 5: Solve for x
    x = 239,825,065,239.69/768,902.60
  6. Step 6: Final answer
    x = 311,905.65

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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.