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Finding the Fourth Proportional to 268,333, 402,572.10 and 90,840.03

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Solution

The fourth proportional to 268,333, 402,572.10 and 90,840.03 is: 136,284.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,333 : 402,572.10 = 90,840.03 : x
  2. Step 2: Convert to fraction form
    268,333/402,572.10 = 90,840.03/x
  3. Step 3: Cross multiply
    268,333x = 402,572.10 × 90,840.03
  4. Step 4: Simplify right side
    268,333x = 36,569,661,186.96
  5. Step 5: Solve for x
    x = 36,569,661,186.96/268,333
  6. Step 6: Final answer
    x = 136,284.62

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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.