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Finding the Fourth Proportional to 356,529.51, 534,795.17 and 90,290.05

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Solution

The fourth proportional to 356,529.51, 534,795.17 and 90,290.05 is: 135,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,529.51 : 534,795.17 = 90,290.05 : x
  2. Step 2: Convert to fraction form
    356,529.51/534,795.17 = 90,290.05/x
  3. Step 3: Cross multiply
    356,529.51x = 534,795.17 × 90,290.05
  4. Step 4: Simplify right side
    356,529.51x = 48,286,682,639.06
  5. Step 5: Solve for x
    x = 48,286,682,639.06/356,529.51
  6. Step 6: Final answer
    x = 135,435.30

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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.