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Finding the Fourth Proportional to 268,816.80, 402,836.40 and 118,934.40

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Solution

The fourth proportional to 268,816.80, 402,836.40 and 118,934.40 is: 178,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,816.80 : 402,836.40 = 118,934.40 : x
  2. Step 2: Convert to fraction form
    268,816.80/402,836.40 = 118,934.40/x
  3. Step 3: Cross multiply
    268,816.80x = 402,836.40 × 118,934.40
  4. Step 4: Simplify right side
    268,816.80x = 47,911,105,532.16
  5. Step 5: Solve for x
    x = 47,911,105,532.16/268,816.80
  6. Step 6: Final answer
    x = 178,229.58

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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.