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Finding the Fourth Proportional to 377,191,987.20, 520,214,400 and 222,518,016

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Solution

The fourth proportional to 377,191,987.20, 520,214,400 and 222,518,016 is: 306,891,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,191,987.20 : 520,214,400 = 222,518,016 : x
  2. Step 2: Convert to fraction form
    377,191,987.20/520,214,400 = 222,518,016/x
  3. Step 3: Cross multiply
    377,191,987.20x = 520,214,400 × 222,518,016
  4. Step 4: Simplify right side
    377,191,987.20x = 115,757,076,182,630,400
  5. Step 5: Solve for x
    x = 115,757,076,182,630,400/377,191,987.20
  6. Step 6: Final answer
    x = 306,891,662.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.