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Finding the Fourth Proportional to 658,412.08, 987,683.91 and 178,647.51

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Solution

The fourth proportional to 658,412.08, 987,683.91 and 178,647.51 is: 267,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,412.08 : 987,683.91 = 178,647.51 : x
  2. Step 2: Convert to fraction form
    658,412.08/987,683.91 = 178,647.51/x
  3. Step 3: Cross multiply
    658,412.08x = 987,683.91 × 178,647.51
  4. Step 4: Simplify right side
    658,412.08x = 176,447,271,188.56
  5. Step 5: Solve for x
    x = 176,447,271,188.56/658,412.08
  6. Step 6: Final answer
    x = 267,989.12

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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.