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Finding the Fourth Proportional to 209,952,242.80, 314,928,364.20 and 206,551,020.40

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Solution

The fourth proportional to 209,952,242.80, 314,928,364.20 and 206,551,020.40 is: 309,826,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,242.80 : 314,928,364.20 = 206,551,020.40 : x
  2. Step 2: Convert to fraction form
    209,952,242.80/314,928,364.20 = 206,551,020.40/x
  3. Step 3: Cross multiply
    209,952,242.80x = 314,928,364.20 × 206,551,020.40
  4. Step 4: Simplify right side
    209,952,242.80x = 65,048,774,978,412,832
  5. Step 5: Solve for x
    x = 65,048,774,978,412,832/209,952,242.80
  6. Step 6: Final answer
    x = 309,826,530.60

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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.