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Finding the Fourth Proportional to 262,128.80, 393,484.80 and 162,401.60

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Solution

The fourth proportional to 262,128.80, 393,484.80 and 162,401.60 is: 243,783.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,128.80 : 393,484.80 = 162,401.60 : x
  2. Step 2: Convert to fraction form
    262,128.80/393,484.80 = 162,401.60/x
  3. Step 3: Cross multiply
    262,128.80x = 393,484.80 × 162,401.60
  4. Step 4: Simplify right side
    262,128.80x = 63,902,561,095.68
  5. Step 5: Solve for x
    x = 63,902,561,095.68/262,128.80
  6. Step 6: Final answer
    x = 243,783.06

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1.5x scale

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.