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Finding the Fourth Proportional to 387,246.44, 534,398.35 and 215,192.42

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Solution

The fourth proportional to 387,246.44, 534,398.35 and 215,192.42 is: 296,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,246.44 : 534,398.35 = 215,192.42 : x
  2. Step 2: Convert to fraction form
    387,246.44/534,398.35 = 215,192.42/x
  3. Step 3: Cross multiply
    387,246.44x = 534,398.35 × 215,192.42
  4. Step 4: Simplify right side
    387,246.44x = 114,998,474,180.51
  5. Step 5: Solve for x
    x = 114,998,474,180.51/387,246.44
  6. Step 6: Final answer
    x = 296,964.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.