Home / 217,911.60-326,867.40-77,619.60

Finding the Fourth Proportional to 217,911.60, 326,867.40 and 77,619.60

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Solution

The fourth proportional to 217,911.60, 326,867.40 and 77,619.60 is: 116,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,911.60 : 326,867.40 = 77,619.60 : x
  2. Step 2: Convert to fraction form
    217,911.60/326,867.40 = 77,619.60/x
  3. Step 3: Cross multiply
    217,911.60x = 326,867.40 × 77,619.60
  4. Step 4: Simplify right side
    217,911.60x = 25,371,316,841.04
  5. Step 5: Solve for x
    x = 25,371,316,841.04/217,911.60
  6. Step 6: Final answer
    x = 116,429.40

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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.