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Finding the Fourth Proportional to 628,701.84, 943,043.52 and 155,387.24

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Solution

The fourth proportional to 628,701.84, 943,043.52 and 155,387.24 is: 233,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,701.84 : 943,043.52 = 155,387.24 : x
  2. Step 2: Convert to fraction form
    628,701.84/943,043.52 = 155,387.24/x
  3. Step 3: Cross multiply
    628,701.84x = 943,043.52 × 155,387.24
  4. Step 4: Simplify right side
    628,701.84x = 146,536,929,772.69
  5. Step 5: Solve for x
    x = 146,536,929,772.69/628,701.84
  6. Step 6: Final answer
    x = 233,078.58

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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.