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Finding the Fourth Proportional to 170,304.08, 255,487.10 and 57,978.54

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Solution

The fourth proportional to 170,304.08, 255,487.10 and 57,978.54 is: 86,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,304.08 : 255,487.10 = 57,978.54 : x
  2. Step 2: Convert to fraction form
    170,304.08/255,487.10 = 57,978.54/x
  3. Step 3: Cross multiply
    170,304.08x = 255,487.10 × 57,978.54
  4. Step 4: Simplify right side
    170,304.08x = 14,812,768,756.94
  5. Step 5: Solve for x
    x = 14,812,768,756.94/170,304.08
  6. Step 6: Final answer
    x = 86,978.36

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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.