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Finding the Fourth Proportional to 291,879.40, 437,819.10 and 104,909.80

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Solution

The fourth proportional to 291,879.40, 437,819.10 and 104,909.80 is: 157,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,879.40 : 437,819.10 = 104,909.80 : x
  2. Step 2: Convert to fraction form
    291,879.40/437,819.10 = 104,909.80/x
  3. Step 3: Cross multiply
    291,879.40x = 437,819.10 × 104,909.80
  4. Step 4: Simplify right side
    291,879.40x = 45,931,514,217.18
  5. Step 5: Solve for x
    x = 45,931,514,217.18/291,879.40
  6. Step 6: Final answer
    x = 157,364.70

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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.