Home / 212,403.67-318,559.29-70,215.35

Finding the Fourth Proportional to 212,403.67, 318,559.29 and 70,215.35

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Solution

The fourth proportional to 212,403.67, 318,559.29 and 70,215.35 is: 105,307.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,403.67 : 318,559.29 = 70,215.35 : x
  2. Step 2: Convert to fraction form
    212,403.67/318,559.29 = 70,215.35/x
  3. Step 3: Cross multiply
    212,403.67x = 318,559.29 × 70,215.35
  4. Step 4: Simplify right side
    212,403.67x = 22,367,752,043.10
  5. Step 5: Solve for x
    x = 22,367,752,043.10/212,403.67
  6. Step 6: Final answer
    x = 105,307.75

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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.