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Finding the Fourth Proportional to 372,159.78, 557,986.98 and 189,341.25

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Solution

The fourth proportional to 372,159.78, 557,986.98 and 189,341.25 is: 283,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,159.78 : 557,986.98 = 189,341.25 : x
  2. Step 2: Convert to fraction form
    372,159.78/557,986.98 = 189,341.25/x
  3. Step 3: Cross multiply
    372,159.78x = 557,986.98 × 189,341.25
  4. Step 4: Simplify right side
    372,159.78x = 105,649,952,276.93
  5. Step 5: Solve for x
    x = 105,649,952,276.93/372,159.78
  6. Step 6: Final answer
    x = 283,883.32

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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.