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Finding the Fourth Proportional to 343,587.42, 515,582.82 and 143,892.45

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Solution

The fourth proportional to 343,587.42, 515,582.82 and 143,892.45 is: 215,923.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,587.42 : 515,582.82 = 143,892.45 : x
  2. Step 2: Convert to fraction form
    343,587.42/515,582.82 = 143,892.45/x
  3. Step 3: Cross multiply
    343,587.42x = 515,582.82 × 143,892.45
  4. Step 4: Simplify right side
    343,587.42x = 74,188,475,147.71
  5. Step 5: Solve for x
    x = 74,188,475,147.71/343,587.42
  6. Step 6: Final answer
    x = 215,923.14

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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.