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Finding the Fourth Proportional to 201,479.20, 302,218.80 and 61,219.60

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Solution

The fourth proportional to 201,479.20, 302,218.80 and 61,219.60 is: 91,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,479.20 : 302,218.80 = 61,219.60 : x
  2. Step 2: Convert to fraction form
    201,479.20/302,218.80 = 61,219.60/x
  3. Step 3: Cross multiply
    201,479.20x = 302,218.80 × 61,219.60
  4. Step 4: Simplify right side
    201,479.20x = 18,501,714,048.48
  5. Step 5: Solve for x
    x = 18,501,714,048.48/201,479.20
  6. Step 6: Final answer
    x = 91,829.40

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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.