Home / 487,942.40-731,913.60-188,436.80

Finding the Fourth Proportional to 487,942.40, 731,913.60 and 188,436.80

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Solution

The fourth proportional to 487,942.40, 731,913.60 and 188,436.80 is: 282,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,942.40 : 731,913.60 = 188,436.80 : x
  2. Step 2: Convert to fraction form
    487,942.40/731,913.60 = 188,436.80/x
  3. Step 3: Cross multiply
    487,942.40x = 731,913.60 × 188,436.80
  4. Step 4: Simplify right side
    487,942.40x = 137,919,456,660.48
  5. Step 5: Solve for x
    x = 137,919,456,660.48/487,942.40
  6. Step 6: Final answer
    x = 282,655.20

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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.