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Finding the Fourth Proportional to 210,337.04, 315,506.09 and 83,987.57

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Solution

The fourth proportional to 210,337.04, 315,506.09 and 83,987.57 is: 125,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,337.04 : 315,506.09 = 83,987.57 : x
  2. Step 2: Convert to fraction form
    210,337.04/315,506.09 = 83,987.57/x
  3. Step 3: Cross multiply
    210,337.04x = 315,506.09 × 83,987.57
  4. Step 4: Simplify right side
    210,337.04x = 26,498,589,399.36
  5. Step 5: Solve for x
    x = 26,498,589,399.36/210,337.04
  6. Step 6: Final answer
    x = 125,981.56

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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.