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Finding the Fourth Proportional to 343,741.32, 515,636.82 and 143,860.59

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Solution

The fourth proportional to 343,741.32, 515,636.82 and 143,860.59 is: 215,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,741.32 : 515,636.82 = 143,860.59 : x
  2. Step 2: Convert to fraction form
    343,741.32/515,636.82 = 143,860.59/x
  3. Step 3: Cross multiply
    343,741.32x = 515,636.82 × 143,860.59
  4. Step 4: Simplify right side
    343,741.32x = 74,179,817,150.92
  5. Step 5: Solve for x
    x = 74,179,817,150.92/343,741.32
  6. Step 6: Final answer
    x = 215,801.28

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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.