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Finding the Fourth Proportional to 356,310.72, 534,604.32 and 134,712

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Solution

The fourth proportional to 356,310.72, 534,604.32 and 134,712 is: 202,120.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,310.72 : 534,604.32 = 134,712 : x
  2. Step 2: Convert to fraction form
    356,310.72/534,604.32 = 134,712/x
  3. Step 3: Cross multiply
    356,310.72x = 534,604.32 × 134,712
  4. Step 4: Simplify right side
    356,310.72x = 72,017,617,155.84
  5. Step 5: Solve for x
    x = 72,017,617,155.84/356,310.72
  6. Step 6: Final answer
    x = 202,120.27

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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.