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Finding the Fourth Proportional to 652,235.20, 978,352.80 and 178,968.40

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Solution

The fourth proportional to 652,235.20, 978,352.80 and 178,968.40 is: 268,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,235.20 : 978,352.80 = 178,968.40 : x
  2. Step 2: Convert to fraction form
    652,235.20/978,352.80 = 178,968.40/x
  3. Step 3: Cross multiply
    652,235.20x = 978,352.80 × 178,968.40
  4. Step 4: Simplify right side
    652,235.20x = 175,094,235,251.52
  5. Step 5: Solve for x
    x = 175,094,235,251.52/652,235.20
  6. Step 6: Final answer
    x = 268,452.60

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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.