Home / 217,421.40-326,132.10-154,435.80

Finding the Fourth Proportional to 217,421.40, 326,132.10 and 154,435.80

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Solution

The fourth proportional to 217,421.40, 326,132.10 and 154,435.80 is: 231,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,421.40 : 326,132.10 = 154,435.80 : x
  2. Step 2: Convert to fraction form
    217,421.40/326,132.10 = 154,435.80/x
  3. Step 3: Cross multiply
    217,421.40x = 326,132.10 × 154,435.80
  4. Step 4: Simplify right side
    217,421.40x = 50,366,471,769.18
  5. Step 5: Solve for x
    x = 50,366,471,769.18/217,421.40
  6. Step 6: Final answer
    x = 231,653.70

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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.