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Finding the Fourth Proportional to 255,198.60, 352,212.71 and 153,280.08

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Solution

The fourth proportional to 255,198.60, 352,212.71 and 153,280.08 is: 211,549.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,198.60 : 352,212.71 = 153,280.08 : x
  2. Step 2: Convert to fraction form
    255,198.60/352,212.71 = 153,280.08/x
  3. Step 3: Cross multiply
    255,198.60x = 352,212.71 × 153,280.08
  4. Step 4: Simplify right side
    255,198.60x = 53,987,191,599.42
  5. Step 5: Solve for x
    x = 53,987,191,599.42/255,198.60
  6. Step 6: Final answer
    x = 211,549.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.