Home / 319,239,872.15-440,550,828.71-172,562,156.15

Finding the Fourth Proportional to 319,239,872.15, 440,550,828.71 and 172,562,156.15

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Solution

The fourth proportional to 319,239,872.15, 440,550,828.71 and 172,562,156.15 is: 238,135,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,239,872.15 : 440,550,828.71 = 172,562,156.15 : x
  2. Step 2: Convert to fraction form
    319,239,872.15/440,550,828.71 = 172,562,156.15/x
  3. Step 3: Cross multiply
    319,239,872.15x = 440,550,828.71 × 172,562,156.15
  4. Step 4: Simplify right side
    319,239,872.15x = 76,022,400,895,866,928
  5. Step 5: Solve for x
    x = 76,022,400,895,866,928/319,239,872.15
  6. Step 6: Final answer
    x = 238,135,670.16

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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.