Home / 393,067,272.08-542,429,094.72-216,856,690.81

Finding the Fourth Proportional to 393,067,272.08, 542,429,094.72 and 216,856,690.81

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Solution

The fourth proportional to 393,067,272.08, 542,429,094.72 and 216,856,690.81 is: 299,260,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,067,272.08 : 542,429,094.72 = 216,856,690.81 : x
  2. Step 2: Convert to fraction form
    393,067,272.08/542,429,094.72 = 216,856,690.81/x
  3. Step 3: Cross multiply
    393,067,272.08x = 542,429,094.72 × 216,856,690.81
  4. Step 4: Simplify right side
    393,067,272.08x = 117,629,378,479,798,992
  5. Step 5: Solve for x
    x = 117,629,378,479,798,992/393,067,272.08
  6. Step 6: Final answer
    x = 299,260,169.53

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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.