Home / 372,393,111.69-513,902,457.99-215,851,020.75

Finding the Fourth Proportional to 372,393,111.69, 513,902,457.99 and 215,851,020.75

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Solution

The fourth proportional to 372,393,111.69, 513,902,457.99 and 215,851,020.75 is: 297,874,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,393,111.69 : 513,902,457.99 = 215,851,020.75 : x
  2. Step 2: Convert to fraction form
    372,393,111.69/513,902,457.99 = 215,851,020.75/x
  3. Step 3: Cross multiply
    372,393,111.69x = 513,902,457.99 × 215,851,020.75
  4. Step 4: Simplify right side
    372,393,111.69x = 110,926,370,123,075,488
  5. Step 5: Solve for x
    x = 110,926,370,123,075,488/372,393,111.69
  6. Step 6: Final answer
    x = 297,874,387.69

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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.