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Finding the Fourth Proportional to 287,798.88, 431,594.64 and 121,599.84

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Solution

The fourth proportional to 287,798.88, 431,594.64 and 121,599.84 is: 182,355.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,798.88 : 431,594.64 = 121,599.84 : x
  2. Step 2: Convert to fraction form
    287,798.88/431,594.64 = 121,599.84/x
  3. Step 3: Cross multiply
    287,798.88x = 431,594.64 × 121,599.84
  4. Step 4: Simplify right side
    287,798.88x = 52,481,839,168.86
  5. Step 5: Solve for x
    x = 52,481,839,168.86/287,798.88
  6. Step 6: Final answer
    x = 182,355.95

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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.