Home / 209,631.44-288,740.40-161,140.64

Finding the Fourth Proportional to 209,631.44, 288,740.40 and 161,140.64

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Solution

The fourth proportional to 209,631.44, 288,740.40 and 161,140.64 is: 221,950.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,631.44 : 288,740.40 = 161,140.64 : x
  2. Step 2: Convert to fraction form
    209,631.44/288,740.40 = 161,140.64/x
  3. Step 3: Cross multiply
    209,631.44x = 288,740.40 × 161,140.64
  4. Step 4: Simplify right side
    209,631.44x = 46,527,812,849.86
  5. Step 5: Solve for x
    x = 46,527,812,849.86/209,631.44
  6. Step 6: Final answer
    x = 221,950.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.