Home / 217,520.57-300,307.08-137,017.10

Finding the Fourth Proportional to 217,520.57, 300,307.08 and 137,017.10

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Solution

The fourth proportional to 217,520.57, 300,307.08 and 137,017.10 is: 189,164.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,520.57 : 300,307.08 = 137,017.10 : x
  2. Step 2: Convert to fraction form
    217,520.57/300,307.08 = 137,017.10/x
  3. Step 3: Cross multiply
    217,520.57x = 300,307.08 × 137,017.10
  4. Step 4: Simplify right side
    217,520.57x = 41,147,205,211.07
  5. Step 5: Solve for x
    x = 41,147,205,211.07/217,520.57
  6. Step 6: Final answer
    x = 189,164.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.