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Finding the Fourth Proportional to 230,987.11, 346,480.72 and 86,920.06

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Solution

The fourth proportional to 230,987.11, 346,480.72 and 86,920.06 is: 130,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,987.11 : 346,480.72 = 86,920.06 : x
  2. Step 2: Convert to fraction form
    230,987.11/346,480.72 = 86,920.06/x
  3. Step 3: Cross multiply
    230,987.11x = 346,480.72 × 86,920.06
  4. Step 4: Simplify right side
    230,987.11x = 30,116,124,971.24
  5. Step 5: Solve for x
    x = 30,116,124,971.24/230,987.11
  6. Step 6: Final answer
    x = 130,380.11

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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.