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Finding the Fourth Proportional to 268,333.31, 402,572.56 and 90,840.34

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Solution

The fourth proportional to 268,333.31, 402,572.56 and 90,840.34 is: 136,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,333.31 : 402,572.56 = 90,840.34 : x
  2. Step 2: Convert to fraction form
    268,333.31/402,572.56 = 90,840.34/x
  3. Step 3: Cross multiply
    268,333.31x = 402,572.56 × 90,840.34
  4. Step 4: Simplify right side
    268,333.31x = 36,569,828,225.07
  5. Step 5: Solve for x
    x = 36,569,828,225.07/268,333.31
  6. Step 6: Final answer
    x = 136,285.09

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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.