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Finding the Fourth Proportional to 287,891.42, 397,084.48 and 249,582.47

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Solution

The fourth proportional to 287,891.42, 397,084.48 and 249,582.47 is: 344,245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,891.42 : 397,084.48 = 249,582.47 : x
  2. Step 2: Convert to fraction form
    287,891.42/397,084.48 = 249,582.47/x
  3. Step 3: Cross multiply
    287,891.42x = 397,084.48 × 249,582.47
  4. Step 4: Simplify right side
    287,891.42x = 99,105,322,707.69
  5. Step 5: Solve for x
    x = 99,105,322,707.69/287,891.42
  6. Step 6: Final answer
    x = 344,245.50

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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.