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Finding the Fourth Proportional to 425,374.39, 587,009.75 and 231,784.68

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Solution

The fourth proportional to 425,374.39, 587,009.75 and 231,784.68 is: 319,859.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,374.39 : 587,009.75 = 231,784.68 : x
  2. Step 2: Convert to fraction form
    425,374.39/587,009.75 = 231,784.68/x
  3. Step 3: Cross multiply
    425,374.39x = 587,009.75 × 231,784.68
  4. Step 4: Simplify right side
    425,374.39x = 136,059,865,901.71
  5. Step 5: Solve for x
    x = 136,059,865,901.71/425,374.39
  6. Step 6: Final answer
    x = 319,859.09

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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.