Home / 212,031.36-318,046.77-54,259.86

Finding the Fourth Proportional to 212,031.36, 318,046.77 and 54,259.86

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Solution

The fourth proportional to 212,031.36, 318,046.77 and 54,259.86 is: 81,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,031.36 : 318,046.77 = 54,259.86 : x
  2. Step 2: Convert to fraction form
    212,031.36/318,046.77 = 54,259.86/x
  3. Step 3: Cross multiply
    212,031.36x = 318,046.77 × 54,259.86
  4. Step 4: Simplify right side
    212,031.36x = 17,257,173,213.65
  5. Step 5: Solve for x
    x = 17,257,173,213.65/212,031.36
  6. Step 6: Final answer
    x = 81,389.72

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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.