Home / 289,991,309.50-400,187,984.82-157,833,253.62

Finding the Fourth Proportional to 289,991,309.50, 400,187,984.82 and 157,833,253.62

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Solution

The fourth proportional to 289,991,309.50, 400,187,984.82 and 157,833,253.62 is: 217,809,877.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,991,309.50 : 400,187,984.82 = 157,833,253.62 : x
  2. Step 2: Convert to fraction form
    289,991,309.50/400,187,984.82 = 157,833,253.62/x
  3. Step 3: Cross multiply
    289,991,309.50x = 400,187,984.82 × 157,833,253.62
  4. Step 4: Simplify right side
    289,991,309.50x = 63,162,971,703,771,768
  5. Step 5: Solve for x
    x = 63,162,971,703,771,768/289,991,309.50
  6. Step 6: Final answer
    x = 217,809,877.86

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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.