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Finding the Fourth Proportional to 217,873.70, 326,810.55 and 70,129.70

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Solution

The fourth proportional to 217,873.70, 326,810.55 and 70,129.70 is: 105,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,873.70 : 326,810.55 = 70,129.70 : x
  2. Step 2: Convert to fraction form
    217,873.70/326,810.55 = 70,129.70/x
  3. Step 3: Cross multiply
    217,873.70x = 326,810.55 × 70,129.70
  4. Step 4: Simplify right side
    217,873.70x = 22,919,125,828.34
  5. Step 5: Solve for x
    x = 22,919,125,828.34/217,873.70
  6. Step 6: Final answer
    x = 105,194.55

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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.