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Finding the Fourth Proportional to 663,276.60, 994,987.80 and 242,643.60

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Solution

The fourth proportional to 663,276.60, 994,987.80 and 242,643.60 is: 363,992.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,276.60 : 994,987.80 = 242,643.60 : x
  2. Step 2: Convert to fraction form
    663,276.60/994,987.80 = 242,643.60/x
  3. Step 3: Cross multiply
    663,276.60x = 994,987.80 × 242,643.60
  4. Step 4: Simplify right side
    663,276.60x = 241,427,421,748.08
  5. Step 5: Solve for x
    x = 241,427,421,748.08/663,276.60
  6. Step 6: Final answer
    x = 363,992.07

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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.