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Finding the Fourth Proportional to 342,077.80, 512,771.10 and 155,223.40

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Solution

The fourth proportional to 342,077.80, 512,771.10 and 155,223.40 is: 232,678.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,077.80 : 512,771.10 = 155,223.40 : x
  2. Step 2: Convert to fraction form
    342,077.80/512,771.10 = 155,223.40/x
  3. Step 3: Cross multiply
    342,077.80x = 512,771.10 × 155,223.40
  4. Step 4: Simplify right side
    342,077.80x = 79,594,073,563.74
  5. Step 5: Solve for x
    x = 79,594,073,563.74/342,077.80
  6. Step 6: Final answer
    x = 232,678.28

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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.