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Finding the Fourth Proportional to 296,866.60, 445,818.30 and 287,535.40

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Solution

The fourth proportional to 296,866.60, 445,818.30 and 287,535.40 is: 431,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,866.60 : 445,818.30 = 287,535.40 : x
  2. Step 2: Convert to fraction form
    296,866.60/445,818.30 = 287,535.40/x
  3. Step 3: Cross multiply
    296,866.60x = 445,818.30 × 287,535.40
  4. Step 4: Simplify right side
    296,866.60x = 128,188,543,217.82
  5. Step 5: Solve for x
    x = 128,188,543,217.82/296,866.60
  6. Step 6: Final answer
    x = 431,805.21

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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.