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Finding the Fourth Proportional to 207,862.40, 311,793.60 and 205,097.60

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Solution

The fourth proportional to 207,862.40, 311,793.60 and 205,097.60 is: 307,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,862.40 : 311,793.60 = 205,097.60 : x
  2. Step 2: Convert to fraction form
    207,862.40/311,793.60 = 205,097.60/x
  3. Step 3: Cross multiply
    207,862.40x = 311,793.60 × 205,097.60
  4. Step 4: Simplify right side
    207,862.40x = 63,948,119,055.36
  5. Step 5: Solve for x
    x = 63,948,119,055.36/207,862.40
  6. Step 6: Final answer
    x = 307,646.40

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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.