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Finding the Fourth Proportional to 343,506.20, 515,259.30 and 305,452.40

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Solution

The fourth proportional to 343,506.20, 515,259.30 and 305,452.40 is: 458,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,506.20 : 515,259.30 = 305,452.40 : x
  2. Step 2: Convert to fraction form
    343,506.20/515,259.30 = 305,452.40/x
  3. Step 3: Cross multiply
    343,506.20x = 515,259.30 × 305,452.40
  4. Step 4: Simplify right side
    343,506.20x = 157,387,189,807.32
  5. Step 5: Solve for x
    x = 157,387,189,807.32/343,506.20
  6. Step 6: Final answer
    x = 458,178.60

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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.