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Finding the Fourth Proportional to 342,306.40, 512,077.20 and 296,072.80

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Solution

The fourth proportional to 342,306.40, 512,077.20 and 296,072.80 is: 442,913.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,306.40 : 512,077.20 = 296,072.80 : x
  2. Step 2: Convert to fraction form
    342,306.40/512,077.20 = 296,072.80/x
  3. Step 3: Cross multiply
    342,306.40x = 512,077.20 × 296,072.80
  4. Step 4: Simplify right side
    342,306.40x = 151,612,130,420.16
  5. Step 5: Solve for x
    x = 151,612,130,420.16/342,306.40
  6. Step 6: Final answer
    x = 442,913.51

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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.