Home / 212,575.38-318,908.05-70,412.60

Finding the Fourth Proportional to 212,575.38, 318,908.05 and 70,412.60

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Solution

The fourth proportional to 212,575.38, 318,908.05 and 70,412.60 is: 105,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,575.38 : 318,908.05 = 70,412.60 : x
  2. Step 2: Convert to fraction form
    212,575.38/318,908.05 = 70,412.60/x
  3. Step 3: Cross multiply
    212,575.38x = 318,908.05 × 70,412.60
  4. Step 4: Simplify right side
    212,575.38x = 22,455,145,907.36
  5. Step 5: Solve for x
    x = 22,455,145,907.36/212,575.38
  6. Step 6: Final answer
    x = 105,633.80

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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.