Home / 209,007.20-313,316.40-145,827.20

Finding the Fourth Proportional to 209,007.20, 313,316.40 and 145,827.20

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Solution

The fourth proportional to 209,007.20, 313,316.40 and 145,827.20 is: 218,605.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,007.20 : 313,316.40 = 145,827.20 : x
  2. Step 2: Convert to fraction form
    209,007.20/313,316.40 = 145,827.20/x
  3. Step 3: Cross multiply
    209,007.20x = 313,316.40 × 145,827.20
  4. Step 4: Simplify right side
    209,007.20x = 45,690,053,326.08
  5. Step 5: Solve for x
    x = 45,690,053,326.08/209,007.20
  6. Step 6: Final answer
    x = 218,605.16

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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.