Home / 217,877.20-326,815.80-155,208.40

Finding the Fourth Proportional to 217,877.20, 326,815.80 and 155,208.40

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Solution

The fourth proportional to 217,877.20, 326,815.80 and 155,208.40 is: 232,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,877.20 : 326,815.80 = 155,208.40 : x
  2. Step 2: Convert to fraction form
    217,877.20/326,815.80 = 155,208.40/x
  3. Step 3: Cross multiply
    217,877.20x = 326,815.80 × 155,208.40
  4. Step 4: Simplify right side
    217,877.20x = 50,724,557,412.72
  5. Step 5: Solve for x
    x = 50,724,557,412.72/217,877.20
  6. Step 6: Final answer
    x = 232,812.60

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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.