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Finding the Fourth Proportional to 489,985.63, 734,978.44 and 157,561.63

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Solution

The fourth proportional to 489,985.63, 734,978.44 and 157,561.63 is: 236,342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,985.63 : 734,978.44 = 157,561.63 : x
  2. Step 2: Convert to fraction form
    489,985.63/734,978.44 = 157,561.63/x
  3. Step 3: Cross multiply
    489,985.63x = 734,978.44 × 157,561.63
  4. Step 4: Simplify right side
    489,985.63x = 115,804,396,952.46
  5. Step 5: Solve for x
    x = 115,804,396,952.46/489,985.63
  6. Step 6: Final answer
    x = 236,342.44

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Similar ratio
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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.