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Finding the Fourth Proportional to 342,124.40, 512,603.40 and 291,969.20

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Solution

The fourth proportional to 342,124.40, 512,603.40 and 291,969.20 is: 437,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,124.40 : 512,603.40 = 291,969.20 : x
  2. Step 2: Convert to fraction form
    342,124.40/512,603.40 = 291,969.20/x
  3. Step 3: Cross multiply
    342,124.40x = 512,603.40 × 291,969.20
  4. Step 4: Simplify right side
    342,124.40x = 149,664,404,615.28
  5. Step 5: Solve for x
    x = 149,664,404,615.28/342,124.40
  6. Step 6: Final answer
    x = 437,456.10

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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.