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Finding the Fourth Proportional to 356,478.33, 534,717.89 and 90,238.82

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Solution

The fourth proportional to 356,478.33, 534,717.89 and 90,238.82 is: 135,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,478.33 : 534,717.89 = 90,238.82 : x
  2. Step 2: Convert to fraction form
    356,478.33/534,717.89 = 90,238.82/x
  3. Step 3: Cross multiply
    356,478.33x = 534,717.89 × 90,238.82
  4. Step 4: Simplify right side
    356,478.33x = 48,252,308,301.71
  5. Step 5: Solve for x
    x = 48,252,308,301.71/356,478.33
  6. Step 6: Final answer
    x = 135,358.32

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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.