Home / 319,239,901.79-440,550,869.60-172,562,185.79

Finding the Fourth Proportional to 319,239,901.79, 440,550,869.60 and 172,562,185.79

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Solution

The fourth proportional to 319,239,901.79, 440,550,869.60 and 172,562,185.79 is: 238,135,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,239,901.79 : 440,550,869.60 = 172,562,185.79 : x
  2. Step 2: Convert to fraction form
    319,239,901.79/440,550,869.60 = 172,562,185.79/x
  3. Step 3: Cross multiply
    319,239,901.79x = 440,550,869.60 × 172,562,185.79
  4. Step 4: Simplify right side
    319,239,901.79x = 76,022,421,006,795,696
  5. Step 5: Solve for x
    x = 76,022,421,006,795,696/319,239,901.79
  6. Step 6: Final answer
    x = 238,135,711.05

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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.