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Finding the Fourth Proportional to 429,933.60, 644,900.40 and 134,445.60

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Solution

The fourth proportional to 429,933.60, 644,900.40 and 134,445.60 is: 201,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,933.60 : 644,900.40 = 134,445.60 : x
  2. Step 2: Convert to fraction form
    429,933.60/644,900.40 = 134,445.60/x
  3. Step 3: Cross multiply
    429,933.60x = 644,900.40 × 134,445.60
  4. Step 4: Simplify right side
    429,933.60x = 86,704,021,218.24
  5. Step 5: Solve for x
    x = 86,704,021,218.24/429,933.60
  6. Step 6: Final answer
    x = 201,668.40

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Double scale
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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.