Home / 353,140.80-528,933.60-313,742.40

Finding the Fourth Proportional to 353,140.80, 528,933.60 and 313,742.40

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Solution

The fourth proportional to 353,140.80, 528,933.60 and 313,742.40 is: 469,922.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,140.80 : 528,933.60 = 313,742.40 : x
  2. Step 2: Convert to fraction form
    353,140.80/528,933.60 = 313,742.40/x
  3. Step 3: Cross multiply
    353,140.80x = 528,933.60 × 313,742.40
  4. Step 4: Simplify right side
    353,140.80x = 165,948,897,104.64
  5. Step 5: Solve for x
    x = 165,948,897,104.64/353,140.80
  6. Step 6: Final answer
    x = 469,922.75

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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.