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Finding the Fourth Proportional to 303,358.10, 455,037.15 and 103,630.33

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Solution

The fourth proportional to 303,358.10, 455,037.15 and 103,630.33 is: 155,445.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,358.10 : 455,037.15 = 103,630.33 : x
  2. Step 2: Convert to fraction form
    303,358.10/455,037.15 = 103,630.33/x
  3. Step 3: Cross multiply
    303,358.10x = 455,037.15 × 103,630.33
  4. Step 4: Simplify right side
    303,358.10x = 47,155,650,016.76
  5. Step 5: Solve for x
    x = 47,155,650,016.76/303,358.10
  6. Step 6: Final answer
    x = 155,445.50

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Similar ratio
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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.