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Finding the Fourth Proportional to 386,920.68, 534,199.50 and 266,023.32

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Solution

The fourth proportional to 386,920.68, 534,199.50 and 266,023.32 is: 367,283.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,920.68 : 534,199.50 = 266,023.32 : x
  2. Step 2: Convert to fraction form
    386,920.68/534,199.50 = 266,023.32/x
  3. Step 3: Cross multiply
    386,920.68x = 534,199.50 × 266,023.32
  4. Step 4: Simplify right side
    386,920.68x = 142,109,524,532.34
  5. Step 5: Solve for x
    x = 142,109,524,532.34/386,920.68
  6. Step 6: Final answer
    x = 367,283.35

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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.