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Finding the Fourth Proportional to 216,987.15, 325,496.32 and 74,830.38

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Solution

The fourth proportional to 216,987.15, 325,496.32 and 74,830.38 is: 112,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,987.15 : 325,496.32 = 74,830.38 : x
  2. Step 2: Convert to fraction form
    216,987.15/325,496.32 = 74,830.38/x
  3. Step 3: Cross multiply
    216,987.15x = 325,496.32 × 74,830.38
  4. Step 4: Simplify right side
    216,987.15x = 24,357,013,314.20
  5. Step 5: Solve for x
    x = 24,357,013,314.20/216,987.15
  6. Step 6: Final answer
    x = 112,250.95

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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.