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Finding the Fourth Proportional to 286,442.28, 429,860.62 and 99,453.80

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Solution

The fourth proportional to 286,442.28, 429,860.62 and 99,453.80 is: 149,249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,442.28 : 429,860.62 = 99,453.80 : x
  2. Step 2: Convert to fraction form
    286,442.28/429,860.62 = 99,453.80/x
  3. Step 3: Cross multiply
    286,442.28x = 429,860.62 × 99,453.80
  4. Step 4: Simplify right side
    286,442.28x = 42,751,272,129.36
  5. Step 5: Solve for x
    x = 42,751,272,129.36/286,442.28
  6. Step 6: Final answer
    x = 149,249.17

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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.