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Finding the Fourth Proportional to 855,230.70, 1,282,682.02 and 256,211.40

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Solution

The fourth proportional to 855,230.70, 1,282,682.02 and 256,211.40 is: 384,267.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,230.70 : 1,282,682.02 = 256,211.40 : x
  2. Step 2: Convert to fraction form
    855,230.70/1,282,682.02 = 256,211.40/x
  3. Step 3: Cross multiply
    855,230.70x = 1,282,682.02 × 256,211.40
  4. Step 4: Simplify right side
    855,230.70x = 328,637,756,099.03
  5. Step 5: Solve for x
    x = 328,637,756,099.03/855,230.70
  6. Step 6: Final answer
    x = 384,267.96

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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.