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Finding the Fourth Proportional to 357,078.17, 535,620.40 and 90,838.97

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Solution

The fourth proportional to 357,078.17, 535,620.40 and 90,838.97 is: 136,259.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,078.17 : 535,620.40 = 90,838.97 : x
  2. Step 2: Convert to fraction form
    357,078.17/535,620.40 = 90,838.97/x
  3. Step 3: Cross multiply
    357,078.17x = 535,620.40 × 90,838.97
  4. Step 4: Simplify right side
    357,078.17x = 48,655,204,550.37
  5. Step 5: Solve for x
    x = 48,655,204,550.37/357,078.17
  6. Step 6: Final answer
    x = 136,259.25

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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.