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Finding the Fourth Proportional to 386,594.40, 579,200.40 and 331,298.40

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Solution

The fourth proportional to 386,594.40, 579,200.40 and 331,298.40 is: 496,355.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,594.40 : 579,200.40 = 331,298.40 : x
  2. Step 2: Convert to fraction form
    386,594.40/579,200.40 = 331,298.40/x
  3. Step 3: Cross multiply
    386,594.40x = 579,200.40 × 331,298.40
  4. Step 4: Simplify right side
    386,594.40x = 191,888,165,799.36
  5. Step 5: Solve for x
    x = 191,888,165,799.36/386,594.40
  6. Step 6: Final answer
    x = 496,355.26

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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.