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Finding the Fourth Proportional to 303,911.60, 455,867.40 and 286,415.60

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Solution

The fourth proportional to 303,911.60, 455,867.40 and 286,415.60 is: 429,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,911.60 : 455,867.40 = 286,415.60 : x
  2. Step 2: Convert to fraction form
    303,911.60/455,867.40 = 286,415.60/x
  3. Step 3: Cross multiply
    303,911.60x = 455,867.40 × 286,415.60
  4. Step 4: Simplify right side
    303,911.60x = 130,567,534,891.44
  5. Step 5: Solve for x
    x = 130,567,534,891.44/303,911.60
  6. Step 6: Final answer
    x = 429,623.40

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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.