Home / 217,426.40-326,139.60-99,328.40

Finding the Fourth Proportional to 217,426.40, 326,139.60 and 99,328.40

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Solution

The fourth proportional to 217,426.40, 326,139.60 and 99,328.40 is: 148,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,426.40 : 326,139.60 = 99,328.40 : x
  2. Step 2: Convert to fraction form
    217,426.40/326,139.60 = 99,328.40/x
  3. Step 3: Cross multiply
    217,426.40x = 326,139.60 × 99,328.40
  4. Step 4: Simplify right side
    217,426.40x = 32,394,924,644.64
  5. Step 5: Solve for x
    x = 32,394,924,644.64/217,426.40
  6. Step 6: Final answer
    x = 148,992.60

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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.