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Finding the Fourth Proportional to 301,762.78, 452,709.78 and 91,417.12

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Solution

The fourth proportional to 301,762.78, 452,709.78 and 91,417.12 is: 137,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,762.78 : 452,709.78 = 91,417.12 : x
  2. Step 2: Convert to fraction form
    301,762.78/452,709.78 = 91,417.12/x
  3. Step 3: Cross multiply
    301,762.78x = 452,709.78 × 91,417.12
  4. Step 4: Simplify right side
    301,762.78x = 41,385,422,808.85
  5. Step 5: Solve for x
    x = 41,385,422,808.85/301,762.78
  6. Step 6: Final answer
    x = 137,145.55

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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.