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Finding the Fourth Proportional to 287,637.07, 431,361.70 and 95,459.87

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Solution

The fourth proportional to 287,637.07, 431,361.70 and 95,459.87 is: 143,158.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,637.07 : 431,361.70 = 95,459.87 : x
  2. Step 2: Convert to fraction form
    287,637.07/431,361.70 = 95,459.87/x
  3. Step 3: Cross multiply
    287,637.07x = 431,361.70 × 95,459.87
  4. Step 4: Simplify right side
    287,637.07x = 41,177,732,644.73
  5. Step 5: Solve for x
    x = 41,177,732,644.73/287,637.07
  6. Step 6: Final answer
    x = 143,158.64

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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.