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Finding the Fourth Proportional to 307,851.40, 461,949.90 and 130,328.20

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Solution

The fourth proportional to 307,851.40, 461,949.90 and 130,328.20 is: 195,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,851.40 : 461,949.90 = 130,328.20 : x
  2. Step 2: Convert to fraction form
    307,851.40/461,949.90 = 130,328.20/x
  3. Step 3: Cross multiply
    307,851.40x = 461,949.90 × 130,328.20
  4. Step 4: Simplify right side
    307,851.40x = 60,205,098,957.18
  5. Step 5: Solve for x
    x = 60,205,098,957.18/307,851.40
  6. Step 6: Final answer
    x = 195,565.45

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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.