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Finding the Fourth Proportional to 209,225.20, 313,837.80 and 125,244.40

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Solution

The fourth proportional to 209,225.20, 313,837.80 and 125,244.40 is: 187,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,225.20 : 313,837.80 = 125,244.40 : x
  2. Step 2: Convert to fraction form
    209,225.20/313,837.80 = 125,244.40/x
  3. Step 3: Cross multiply
    209,225.20x = 313,837.80 × 125,244.40
  4. Step 4: Simplify right side
    209,225.20x = 39,306,426,958.32
  5. Step 5: Solve for x
    x = 39,306,426,958.32/209,225.20
  6. Step 6: Final answer
    x = 187,866.60

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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.