Home / 289,990,103.72-400,195,131.89-157,840,656.06

Finding the Fourth Proportional to 289,990,103.72, 400,195,131.89 and 157,840,656.06

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Solution

The fourth proportional to 289,990,103.72, 400,195,131.89 and 157,840,656.06 is: 217,824,889.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,990,103.72 : 400,195,131.89 = 157,840,656.06 : x
  2. Step 2: Convert to fraction form
    289,990,103.72/400,195,131.89 = 157,840,656.06/x
  3. Step 3: Cross multiply
    289,990,103.72x = 400,195,131.89 × 157,840,656.06
  4. Step 4: Simplify right side
    289,990,103.72x = 63,167,062,168,746,624
  5. Step 5: Solve for x
    x = 63,167,062,168,746,624/289,990,103.72
  6. Step 6: Final answer
    x = 217,824,889.05

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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.