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Finding the Fourth Proportional to 572,112.40, 857,909.40 and 217,008.40

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Solution

The fourth proportional to 572,112.40, 857,909.40 and 217,008.40 is: 325,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,112.40 : 857,909.40 = 217,008.40 : x
  2. Step 2: Convert to fraction form
    572,112.40/857,909.40 = 217,008.40/x
  3. Step 3: Cross multiply
    572,112.40x = 857,909.40 × 217,008.40
  4. Step 4: Simplify right side
    572,112.40x = 186,173,546,238.96
  5. Step 5: Solve for x
    x = 186,173,546,238.96/572,112.40
  6. Step 6: Final answer
    x = 325,414.28

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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.