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Finding the Fourth Proportional to 257,133.11, 385,699.73 and 88,701.71

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Solution

The fourth proportional to 257,133.11, 385,699.73 and 88,701.71 is: 133,052.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,133.11 : 385,699.73 = 88,701.71 : x
  2. Step 2: Convert to fraction form
    257,133.11/385,699.73 = 88,701.71/x
  3. Step 3: Cross multiply
    257,133.11x = 385,699.73 × 88,701.71
  4. Step 4: Simplify right side
    257,133.11x = 34,212,223,225.53
  5. Step 5: Solve for x
    x = 34,212,223,225.53/257,133.11
  6. Step 6: Final answer
    x = 133,052.58

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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.