Home / 210,475.11-315,515.82-77,319.60

Finding the Fourth Proportional to 210,475.11, 315,515.82 and 77,319.60

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Solution

The fourth proportional to 210,475.11, 315,515.82 and 77,319.60 is: 115,907.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,475.11 : 315,515.82 = 77,319.60 : x
  2. Step 2: Convert to fraction form
    210,475.11/315,515.82 = 77,319.60/x
  3. Step 3: Cross multiply
    210,475.11x = 315,515.82 × 77,319.60
  4. Step 4: Simplify right side
    210,475.11x = 24,395,556,996.07
  5. Step 5: Solve for x
    x = 24,395,556,996.07/210,475.11
  6. Step 6: Final answer
    x = 115,907.09

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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.