Home / 353,139.80-528,932.10-313,741.40

Finding the Fourth Proportional to 353,139.80, 528,932.10 and 313,741.40

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Solution

The fourth proportional to 353,139.80, 528,932.10 and 313,741.40 is: 469,921.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,139.80 : 528,932.10 = 313,741.40 : x
  2. Step 2: Convert to fraction form
    353,139.80/528,932.10 = 313,741.40/x
  3. Step 3: Cross multiply
    353,139.80x = 528,932.10 × 313,741.40
  4. Step 4: Simplify right side
    353,139.80x = 165,947,897,558.94
  5. Step 5: Solve for x
    x = 165,947,897,558.94/353,139.80
  6. Step 6: Final answer
    x = 469,921.25

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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.