Home / 312,162,478.35-430,810,674.08-172,976,899.47

Finding the Fourth Proportional to 312,162,478.35, 430,810,674.08 and 172,976,899.47

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Solution

The fourth proportional to 312,162,478.35, 430,810,674.08 and 172,976,899.47 is: 238,722,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,162,478.35 : 430,810,674.08 = 172,976,899.47 : x
  2. Step 2: Convert to fraction form
    312,162,478.35/430,810,674.08 = 172,976,899.47/x
  3. Step 3: Cross multiply
    312,162,478.35x = 430,810,674.08 × 172,976,899.47
  4. Step 4: Simplify right side
    312,162,478.35x = 74,520,294,660,074,208
  5. Step 5: Solve for x
    x = 74,520,294,660,074,208/312,162,478.35
  6. Step 6: Final answer
    x = 238,722,780.05

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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.