Home / 347,758,979.20-521,638,468.80-186,515,843.20

Finding the Fourth Proportional to 347,758,979.20, 521,638,468.80 and 186,515,843.20

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Solution

The fourth proportional to 347,758,979.20, 521,638,468.80 and 186,515,843.20 is: 279,773,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,758,979.20 : 521,638,468.80 = 186,515,843.20 : x
  2. Step 2: Convert to fraction form
    347,758,979.20/521,638,468.80 = 186,515,843.20/x
  3. Step 3: Cross multiply
    347,758,979.20x = 521,638,468.80 × 186,515,843.20
  4. Step 4: Simplify right side
    347,758,979.20x = 97,293,838,853,788,896
  5. Step 5: Solve for x
    x = 97,293,838,853,788,896/347,758,979.20
  6. Step 6: Final answer
    x = 279,773,764.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.