Home / 217,521.07-300,307.77-137,017.60

Finding the Fourth Proportional to 217,521.07, 300,307.77 and 137,017.60

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Solution

The fourth proportional to 217,521.07, 300,307.77 and 137,017.60 is: 189,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,521.07 : 300,307.77 = 137,017.60 : x
  2. Step 2: Convert to fraction form
    217,521.07/300,307.77 = 137,017.60/x
  3. Step 3: Cross multiply
    217,521.07x = 300,307.77 × 137,017.60
  4. Step 4: Simplify right side
    217,521.07x = 41,147,449,906.75
  5. Step 5: Solve for x
    x = 41,147,449,906.75/217,521.07
  6. Step 6: Final answer
    x = 189,165.35

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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.