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Finding the Fourth Proportional to 442,511.60, 663,378.60 and 265,089.20

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Solution

The fourth proportional to 442,511.60, 663,378.60 and 265,089.20 is: 397,400.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,511.60 : 663,378.60 = 265,089.20 : x
  2. Step 2: Convert to fraction form
    442,511.60/663,378.60 = 265,089.20/x
  3. Step 3: Cross multiply
    442,511.60x = 663,378.60 × 265,089.20
  4. Step 4: Simplify right side
    442,511.60x = 175,854,502,371.12
  5. Step 5: Solve for x
    x = 175,854,502,371.12/442,511.60
  6. Step 6: Final answer
    x = 397,400.89

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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.