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Finding the Fourth Proportional to 489,985.38, 734,978.06 and 157,561.38

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Solution

The fourth proportional to 489,985.38, 734,978.06 and 157,561.38 is: 236,342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,985.38 : 734,978.06 = 157,561.38 : x
  2. Step 2: Convert to fraction form
    489,985.38/734,978.06 = 157,561.38/x
  3. Step 3: Cross multiply
    489,985.38x = 734,978.06 × 157,561.38
  4. Step 4: Simplify right side
    489,985.38x = 115,804,154,122.34
  5. Step 5: Solve for x
    x = 115,804,154,122.34/489,985.38
  6. Step 6: Final answer
    x = 236,342.06

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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.