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Finding the Fourth Proportional to 388,354.40, 582,502.80 and 163,656.80

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Solution

The fourth proportional to 388,354.40, 582,502.80 and 163,656.80 is: 245,473.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,354.40 : 582,502.80 = 163,656.80 : x
  2. Step 2: Convert to fraction form
    388,354.40/582,502.80 = 163,656.80/x
  3. Step 3: Cross multiply
    388,354.40x = 582,502.80 × 163,656.80
  4. Step 4: Simplify right side
    388,354.40x = 95,330,544,239.04
  5. Step 5: Solve for x
    x = 95,330,544,239.04/388,354.40
  6. Step 6: Final answer
    x = 245,473.06

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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.