Home / 307,942.40-461,913.60-218,712.80

Finding the Fourth Proportional to 307,942.40, 461,913.60 and 218,712.80

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Solution

The fourth proportional to 307,942.40, 461,913.60 and 218,712.80 is: 328,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,942.40 : 461,913.60 = 218,712.80 : x
  2. Step 2: Convert to fraction form
    307,942.40/461,913.60 = 218,712.80/x
  3. Step 3: Cross multiply
    307,942.40x = 461,913.60 × 218,712.80
  4. Step 4: Simplify right side
    307,942.40x = 101,026,416,814.08
  5. Step 5: Solve for x
    x = 101,026,416,814.08/307,942.40
  6. Step 6: Final answer
    x = 328,069.20

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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.