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Finding the Fourth Proportional to 371,861.16, 513,172.08 and 220,929

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Solution

The fourth proportional to 371,861.16, 513,172.08 and 220,929 is: 304,884.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,861.16 : 513,172.08 = 220,929 : x
  2. Step 2: Convert to fraction form
    371,861.16/513,172.08 = 220,929/x
  3. Step 3: Cross multiply
    371,861.16x = 513,172.08 × 220,929
  4. Step 4: Simplify right side
    371,861.16x = 113,374,594,462.32
  5. Step 5: Solve for x
    x = 113,374,594,462.32/371,861.16
  6. Step 6: Final answer
    x = 304,884.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.