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Finding the Fourth Proportional to 389,066.42, 536,911.66 and 210,218.42

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Solution

The fourth proportional to 389,066.42, 536,911.66 and 210,218.42 is: 290,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,066.42 : 536,911.66 = 210,218.42 : x
  2. Step 2: Convert to fraction form
    389,066.42/536,911.66 = 210,218.42/x
  3. Step 3: Cross multiply
    389,066.42x = 536,911.66 × 210,218.42
  4. Step 4: Simplify right side
    389,066.42x = 112,868,720,844.78
  5. Step 5: Solve for x
    x = 112,868,720,844.78/389,066.42
  6. Step 6: Final answer
    x = 290,101.42

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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.