Home / 543,314.40-815,749.20-307,118.40

Finding the Fourth Proportional to 543,314.40, 815,749.20 and 307,118.40

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Solution

The fourth proportional to 543,314.40, 815,749.20 and 307,118.40 is: 461,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,314.40 : 815,749.20 = 307,118.40 : x
  2. Step 2: Convert to fraction form
    543,314.40/815,749.20 = 307,118.40/x
  3. Step 3: Cross multiply
    543,314.40x = 815,749.20 × 307,118.40
  4. Step 4: Simplify right side
    543,314.40x = 250,531,589,105.28
  5. Step 5: Solve for x
    x = 250,531,589,105.28/543,314.40
  6. Step 6: Final answer
    x = 461,117.15

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1.5x scale

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.