Home / 393,343,873.72-542,844,591.42-217,165,802.20

Finding the Fourth Proportional to 393,343,873.72, 542,844,591.42 and 217,165,802.20

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Solution

The fourth proportional to 393,343,873.72, 542,844,591.42 and 217,165,802.20 is: 299,705,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,343,873.72 : 542,844,591.42 = 217,165,802.20 : x
  2. Step 2: Convert to fraction form
    393,343,873.72/542,844,591.42 = 217,165,802.20/x
  3. Step 3: Cross multiply
    393,343,873.72x = 542,844,591.42 × 217,165,802.20
  4. Step 4: Simplify right side
    393,343,873.72x = 117,887,281,165,655,520
  5. Step 5: Solve for x
    x = 117,887,281,165,655,520/393,343,873.72
  6. Step 6: Final answer
    x = 299,705,395.31

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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.