Home / 307,941.40-461,712.30-130,400.20

Finding the Fourth Proportional to 307,941.40, 461,712.30 and 130,400.20

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Solution

The fourth proportional to 307,941.40, 461,712.30 and 130,400.20 is: 195,515.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,941.40 : 461,712.30 = 130,400.20 : x
  2. Step 2: Convert to fraction form
    307,941.40/461,712.30 = 130,400.20/x
  3. Step 3: Cross multiply
    307,941.40x = 461,712.30 × 130,400.20
  4. Step 4: Simplify right side
    307,941.40x = 60,207,376,262.46
  5. Step 5: Solve for x
    x = 60,207,376,262.46/307,941.40
  6. Step 6: Final answer
    x = 195,515.69

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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.