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Finding the Fourth Proportional to 386,771.04, 580,154.22 and 210,398.94

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Solution

The fourth proportional to 386,771.04, 580,154.22 and 210,398.94 is: 315,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,771.04 : 580,154.22 = 210,398.94 : x
  2. Step 2: Convert to fraction form
    386,771.04/580,154.22 = 210,398.94/x
  3. Step 3: Cross multiply
    386,771.04x = 580,154.22 × 210,398.94
  4. Step 4: Simplify right side
    386,771.04x = 122,063,832,924.53
  5. Step 5: Solve for x
    x = 122,063,832,924.53/386,771.04
  6. Step 6: Final answer
    x = 315,597.14

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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.