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Finding the Fourth Proportional to 387,556.71, 534,974.40 and 226,464.12

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Solution

The fourth proportional to 387,556.71, 534,974.40 and 226,464.12 is: 312,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,556.71 : 534,974.40 = 226,464.12 : x
  2. Step 2: Convert to fraction form
    387,556.71/534,974.40 = 226,464.12/x
  3. Step 3: Cross multiply
    387,556.71x = 534,974.40 × 226,464.12
  4. Step 4: Simplify right side
    387,556.71x = 121,152,506,718.53
  5. Step 5: Solve for x
    x = 121,152,506,718.53/387,556.71
  6. Step 6: Final answer
    x = 312,605.88

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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.