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Finding the Fourth Proportional to 256,622.72, 384,737.86 and 155,398.76

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Solution

The fourth proportional to 256,622.72, 384,737.86 and 155,398.76 is: 232,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,622.72 : 384,737.86 = 155,398.76 : x
  2. Step 2: Convert to fraction form
    256,622.72/384,737.86 = 155,398.76/x
  3. Step 3: Cross multiply
    256,622.72x = 384,737.86 × 155,398.76
  4. Step 4: Simplify right side
    256,622.72x = 59,787,786,369.05
  5. Step 5: Solve for x
    x = 59,787,786,369.05/256,622.72
  6. Step 6: Final answer
    x = 232,979.32

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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.