Home / 212,402.67-318,557.79-70,214.35

Finding the Fourth Proportional to 212,402.67, 318,557.79 and 70,214.35

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Solution

The fourth proportional to 212,402.67, 318,557.79 and 70,214.35 is: 105,306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,402.67 : 318,557.79 = 70,214.35 : x
  2. Step 2: Convert to fraction form
    212,402.67/318,557.79 = 70,214.35/x
  3. Step 3: Cross multiply
    212,402.67x = 318,557.79 × 70,214.35
  4. Step 4: Simplify right side
    212,402.67x = 22,367,328,297.18
  5. Step 5: Solve for x
    x = 22,367,328,297.18/212,402.67
  6. Step 6: Final answer
    x = 105,306.25

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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.