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Finding the Fourth Proportional to 286,879.70, 430,319.55 and 236,141.30

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Solution

The fourth proportional to 286,879.70, 430,319.55 and 236,141.30 is: 354,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,879.70 : 430,319.55 = 236,141.30 : x
  2. Step 2: Convert to fraction form
    286,879.70/430,319.55 = 236,141.30/x
  3. Step 3: Cross multiply
    286,879.70x = 430,319.55 × 236,141.30
  4. Step 4: Simplify right side
    286,879.70x = 101,616,217,952.42
  5. Step 5: Solve for x
    x = 101,616,217,952.42/286,879.70
  6. Step 6: Final answer
    x = 354,211.95

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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.