Home / 380,648,072.97-525,294,340.65-215,635,642.47

Finding the Fourth Proportional to 380,648,072.97, 525,294,340.65 and 215,635,642.47

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Solution

The fourth proportional to 380,648,072.97, 525,294,340.65 and 215,635,642.47 is: 297,577,186.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,648,072.97 : 525,294,340.65 = 215,635,642.47 : x
  2. Step 2: Convert to fraction form
    380,648,072.97/525,294,340.65 = 215,635,642.47/x
  3. Step 3: Cross multiply
    380,648,072.97x = 525,294,340.65 × 215,635,642.47
  4. Step 4: Simplify right side
    380,648,072.97x = 113,272,182,631,917,776
  5. Step 5: Solve for x
    x = 113,272,182,631,917,776/380,648,072.97
  6. Step 6: Final answer
    x = 297,577,186.58

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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.