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Finding the Fourth Proportional to 215,899.40, 301,865.50 and 215,899.40

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Solution

The fourth proportional to 215,899.40, 301,865.50 and 215,899.40 is: 301,865.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,899.40 : 301,865.50 = 215,899.40 : x
  2. Step 2: Convert to fraction form
    215,899.40/301,865.50 = 215,899.40/x
  3. Step 3: Cross multiply
    215,899.40x = 301,865.50 × 215,899.40
  4. Step 4: Simplify right side
    215,899.40x = 65,172,580,330.70
  5. Step 5: Solve for x
    x = 65,172,580,330.70/215,899.40
  6. Step 6: Final answer
    x = 301,865.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.