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Finding the Fourth Proportional to 342,190.40, 512,702.40 and 292,035.20

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Solution

The fourth proportional to 342,190.40, 512,702.40 and 292,035.20 is: 437,555.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,190.40 : 512,702.40 = 292,035.20 : x
  2. Step 2: Convert to fraction form
    342,190.40/512,702.40 = 292,035.20/x
  3. Step 3: Cross multiply
    342,190.40x = 512,702.40 × 292,035.20
  4. Step 4: Simplify right side
    342,190.40x = 149,727,147,924.48
  5. Step 5: Solve for x
    x = 149,727,147,924.48/342,190.40
  6. Step 6: Final answer
    x = 437,555.08

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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.