Home / 217,815.40-326,723.10-134,871.40

Finding the Fourth Proportional to 217,815.40, 326,723.10 and 134,871.40

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Solution

The fourth proportional to 217,815.40, 326,723.10 and 134,871.40 is: 202,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,815.40 : 326,723.10 = 134,871.40 : x
  2. Step 2: Convert to fraction form
    217,815.40/326,723.10 = 134,871.40/x
  3. Step 3: Cross multiply
    217,815.40x = 326,723.10 × 134,871.40
  4. Step 4: Simplify right side
    217,815.40x = 44,065,601,909.34
  5. Step 5: Solve for x
    x = 44,065,601,909.34/217,815.40
  6. Step 6: Final answer
    x = 202,307.10

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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.