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Finding the Fourth Proportional to 408,987.08, 564,396.80 and 236,928.50

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Solution

The fourth proportional to 408,987.08, 564,396.80 and 236,928.50 is: 326,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,987.08 : 564,396.80 = 236,928.50 : x
  2. Step 2: Convert to fraction form
    408,987.08/564,396.80 = 236,928.50/x
  3. Step 3: Cross multiply
    408,987.08x = 564,396.80 × 236,928.50
  4. Step 4: Simplify right side
    408,987.08x = 133,721,683,222.17
  5. Step 5: Solve for x
    x = 133,721,683,222.17/408,987.08
  6. Step 6: Final answer
    x = 326,958.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.