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Finding the Fourth Proportional to 287,955.51, 431,933.31 and 147,624.63

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Solution

The fourth proportional to 287,955.51, 431,933.31 and 147,624.63 is: 221,436.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,955.51 : 431,933.31 = 147,624.63 : x
  2. Step 2: Convert to fraction form
    287,955.51/431,933.31 = 147,624.63/x
  3. Step 3: Cross multiply
    287,955.51x = 431,933.31 × 147,624.63
  4. Step 4: Simplify right side
    287,955.51x = 63,763,995,073.43
  5. Step 5: Solve for x
    x = 63,763,995,073.43/287,955.51
  6. Step 6: Final answer
    x = 221,436.97

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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.