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Finding the Fourth Proportional to 365,429.16, 548,149.82 and 128,774.70

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Solution

The fourth proportional to 365,429.16, 548,149.82 and 128,774.70 is: 193,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,429.16 : 548,149.82 = 128,774.70 : x
  2. Step 2: Convert to fraction form
    365,429.16/548,149.82 = 128,774.70/x
  3. Step 3: Cross multiply
    365,429.16x = 548,149.82 × 128,774.70
  4. Step 4: Simplify right side
    365,429.16x = 70,587,827,981.68
  5. Step 5: Solve for x
    x = 70,587,827,981.68/365,429.16
  6. Step 6: Final answer
    x = 193,164.19

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1.5x scale

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.