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Finding the Fourth Proportional to 384,356.48, 530,633.23 and 255,469.68

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Solution

The fourth proportional to 384,356.48, 530,633.23 and 255,469.68 is: 352,695.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,356.48 : 530,633.23 = 255,469.68 : x
  2. Step 2: Convert to fraction form
    384,356.48/530,633.23 = 255,469.68/x
  3. Step 3: Cross multiply
    384,356.48x = 530,633.23 × 255,469.68
  4. Step 4: Simplify right side
    384,356.48x = 135,560,700,826.79
  5. Step 5: Solve for x
    x = 135,560,700,826.79/384,356.48
  6. Step 6: Final answer
    x = 352,695.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.