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Finding the Fourth Proportional to 287,757.88, 431,761.16 and 154,482.51

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Solution

The fourth proportional to 287,757.88, 431,761.16 and 154,482.51 is: 231,790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,757.88 : 431,761.16 = 154,482.51 : x
  2. Step 2: Convert to fraction form
    287,757.88/431,761.16 = 154,482.51/x
  3. Step 3: Cross multiply
    287,757.88x = 431,761.16 × 154,482.51
  4. Step 4: Simplify right side
    287,757.88x = 66,699,547,717.31
  5. Step 5: Solve for x
    x = 66,699,547,717.31/287,757.88
  6. Step 6: Final answer
    x = 231,790.52

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.