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Finding the Fourth Proportional to 472,853.09, 709,272.75 and 219,992.15

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Solution

The fourth proportional to 472,853.09, 709,272.75 and 219,992.15 is: 329,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,853.09 : 709,272.75 = 219,992.15 : x
  2. Step 2: Convert to fraction form
    472,853.09/709,272.75 = 219,992.15/x
  3. Step 3: Cross multiply
    472,853.09x = 709,272.75 × 219,992.15
  4. Step 4: Simplify right side
    472,853.09x = 156,034,439,807.07
  5. Step 5: Solve for x
    x = 156,034,439,807.07/472,853.09
  6. Step 6: Final answer
    x = 329,985.03

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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.