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Finding the Fourth Proportional to 599,812.80, 899,719.20 and 156,580.80

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Solution

The fourth proportional to 599,812.80, 899,719.20 and 156,580.80 is: 234,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,812.80 : 899,719.20 = 156,580.80 : x
  2. Step 2: Convert to fraction form
    599,812.80/899,719.20 = 156,580.80/x
  3. Step 3: Cross multiply
    599,812.80x = 899,719.20 × 156,580.80
  4. Step 4: Simplify right side
    599,812.80x = 140,878,752,111.36
  5. Step 5: Solve for x
    x = 140,878,752,111.36/599,812.80
  6. Step 6: Final answer
    x = 234,871.20

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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.