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Finding the Fourth Proportional to 257,328.59, 386,021.34 and 88,829.81

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Solution

The fourth proportional to 257,328.59, 386,021.34 and 88,829.81 is: 133,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,328.59 : 386,021.34 = 88,829.81 : x
  2. Step 2: Convert to fraction form
    257,328.59/386,021.34 = 88,829.81/x
  3. Step 3: Cross multiply
    257,328.59x = 386,021.34 × 88,829.81
  4. Step 4: Simplify right side
    257,328.59x = 34,290,201,844.00
  5. Step 5: Solve for x
    x = 34,290,201,844.00/257,328.59
  6. Step 6: Final answer
    x = 133,254.54

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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.