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Finding the Fourth Proportional to 307,562.30, 461,343.45 and 85,946.30

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Solution

The fourth proportional to 307,562.30, 461,343.45 and 85,946.30 is: 128,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,562.30 : 461,343.45 = 85,946.30 : x
  2. Step 2: Convert to fraction form
    307,562.30/461,343.45 = 85,946.30/x
  3. Step 3: Cross multiply
    307,562.30x = 461,343.45 × 85,946.30
  4. Step 4: Simplify right side
    307,562.30x = 39,650,762,556.74
  5. Step 5: Solve for x
    x = 39,650,762,556.74/307,562.30
  6. Step 6: Final answer
    x = 128,919.45

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Double scale
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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.