Home / 312,162,490.23-430,810,690.53-172,976,911.35

Finding the Fourth Proportional to 312,162,490.23, 430,810,690.53 and 172,976,911.35

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Solution

The fourth proportional to 312,162,490.23, 430,810,690.53 and 172,976,911.35 is: 238,722,796.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,162,490.23 : 430,810,690.53 = 172,976,911.35 : x
  2. Step 2: Convert to fraction form
    312,162,490.23/430,810,690.53 = 172,976,911.35/x
  3. Step 3: Cross multiply
    312,162,490.23x = 430,810,690.53 × 172,976,911.35
  4. Step 4: Simplify right side
    312,162,490.23x = 74,520,302,624,440,080
  5. Step 5: Solve for x
    x = 74,520,302,624,440,080/312,162,490.23
  6. Step 6: Final answer
    x = 238,722,796.48

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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.