Home / 217,739,827.20-326,609,740.80-81,396,998.40

Finding the Fourth Proportional to 217,739,827.20, 326,609,740.80 and 81,396,998.40

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Solution

The fourth proportional to 217,739,827.20, 326,609,740.80 and 81,396,998.40 is: 122,095,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,739,827.20 : 326,609,740.80 = 81,396,998.40 : x
  2. Step 2: Convert to fraction form
    217,739,827.20/326,609,740.80 = 81,396,998.40/x
  3. Step 3: Cross multiply
    217,739,827.20x = 326,609,740.80 × 81,396,998.40
  4. Step 4: Simplify right side
    217,739,827.20x = 26,585,052,549,322,016
  5. Step 5: Solve for x
    x = 26,585,052,549,322,016/217,739,827.20
  6. Step 6: Final answer
    x = 122,095,497.60

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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.