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Finding the Fourth Proportional to 342,040.40, 512,477.40 and 291,885.20

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Solution

The fourth proportional to 342,040.40, 512,477.40 and 291,885.20 is: 437,330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,040.40 : 512,477.40 = 291,885.20 : x
  2. Step 2: Convert to fraction form
    342,040.40/512,477.40 = 291,885.20/x
  3. Step 3: Cross multiply
    342,040.40x = 512,477.40 × 291,885.20
  4. Step 4: Simplify right side
    342,040.40x = 149,584,568,394.48
  5. Step 5: Solve for x
    x = 149,584,568,394.48/342,040.40
  6. Step 6: Final answer
    x = 437,330.12

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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.