Home / 311,942,521.04-430,494,132-172,713,284.72

Finding the Fourth Proportional to 311,942,521.04, 430,494,132 and 172,713,284.72

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Solution

The fourth proportional to 311,942,521.04, 430,494,132 and 172,713,284.72 is: 238,351,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,942,521.04 : 430,494,132 = 172,713,284.72 : x
  2. Step 2: Convert to fraction form
    311,942,521.04/430,494,132 = 172,713,284.72/x
  3. Step 3: Cross multiply
    311,942,521.04x = 430,494,132 × 172,713,284.72
  4. Step 4: Simplify right side
    311,942,521.04x = 74,352,055,590,405,264
  5. Step 5: Solve for x
    x = 74,352,055,590,405,264/311,942,521.04
  6. Step 6: Final answer
    x = 238,351,781.42

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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.