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Finding the Fourth Proportional to 442,860.40, 663,415.80 and 264,838.60

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Solution

The fourth proportional to 442,860.40, 663,415.80 and 264,838.60 is: 396,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,860.40 : 663,415.80 = 264,838.60 : x
  2. Step 2: Convert to fraction form
    442,860.40/663,415.80 = 264,838.60/x
  3. Step 3: Cross multiply
    442,860.40x = 663,415.80 × 264,838.60
  4. Step 4: Simplify right side
    442,860.40x = 175,698,111,689.88
  5. Step 5: Solve for x
    x = 175,698,111,689.88/442,860.40
  6. Step 6: Final answer
    x = 396,734.75

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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.