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Finding the Fourth Proportional to 519,058,860.88, 778,489,065.72 and 155,553,216.88

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Solution

The fourth proportional to 519,058,860.88, 778,489,065.72 and 155,553,216.88 is: 233,300,089.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,058,860.88 : 778,489,065.72 = 155,553,216.88 : x
  2. Step 2: Convert to fraction form
    519,058,860.88/778,489,065.72 = 155,553,216.88/x
  3. Step 3: Cross multiply
    519,058,860.88x = 778,489,065.72 × 155,553,216.88
  4. Step 4: Simplify right side
    519,058,860.88x = 121,096,478,478,651,728
  5. Step 5: Solve for x
    x = 121,096,478,478,651,728/519,058,860.88
  6. Step 6: Final answer
    x = 233,300,089.08

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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.