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Finding the Fourth Proportional to 308,841.20, 463,261.80 and 87,225.20

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Solution

The fourth proportional to 308,841.20, 463,261.80 and 87,225.20 is: 130,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,841.20 : 463,261.80 = 87,225.20 : x
  2. Step 2: Convert to fraction form
    308,841.20/463,261.80 = 87,225.20/x
  3. Step 3: Cross multiply
    308,841.20x = 463,261.80 × 87,225.20
  4. Step 4: Simplify right side
    308,841.20x = 40,408,103,157.36
  5. Step 5: Solve for x
    x = 40,408,103,157.36/308,841.20
  6. Step 6: Final answer
    x = 130,837.80

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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.