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Finding the Fourth Proportional to 257,199.03, 385,807.83 and 88,724.85

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Solution

The fourth proportional to 257,199.03, 385,807.83 and 88,724.85 is: 133,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,199.03 : 385,807.83 = 88,724.85 : x
  2. Step 2: Convert to fraction form
    257,199.03/385,807.83 = 88,724.85/x
  3. Step 3: Cross multiply
    257,199.03x = 385,807.83 × 88,724.85
  4. Step 4: Simplify right side
    257,199.03x = 34,230,742,810.10
  5. Step 5: Solve for x
    x = 34,230,742,810.10/257,199.03
  6. Step 6: Final answer
    x = 133,090.48

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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.