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Finding the Fourth Proportional to 489,812.40, 734,718.60 and 134,881.20

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Solution

The fourth proportional to 489,812.40, 734,718.60 and 134,881.20 is: 202,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,812.40 : 734,718.60 = 134,881.20 : x
  2. Step 2: Convert to fraction form
    489,812.40/734,718.60 = 134,881.20/x
  3. Step 3: Cross multiply
    489,812.40x = 734,718.60 × 134,881.20
  4. Step 4: Simplify right side
    489,812.40x = 99,099,726,430.32
  5. Step 5: Solve for x
    x = 99,099,726,430.32/489,812.40
  6. Step 6: Final answer
    x = 202,321.80

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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.