Home / 385,315,053.57-531,736,166.03-209,103,010.65

Finding the Fourth Proportional to 385,315,053.57, 531,736,166.03 and 209,103,010.65

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Solution

The fourth proportional to 385,315,053.57, 531,736,166.03 and 209,103,010.65 is: 288,562,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,315,053.57 : 531,736,166.03 = 209,103,010.65 : x
  2. Step 2: Convert to fraction form
    385,315,053.57/531,736,166.03 = 209,103,010.65/x
  3. Step 3: Cross multiply
    385,315,053.57x = 531,736,166.03 × 209,103,010.65
  4. Step 4: Simplify right side
    385,315,053.57x = 111,187,633,187,315,744
  5. Step 5: Solve for x
    x = 111,187,633,187,315,744/385,315,053.57
  6. Step 6: Final answer
    x = 288,562,910.16

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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.