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Finding the Fourth Proportional to 390,600.01, 539,023.16 and 229,469.75

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Solution

The fourth proportional to 390,600.01, 539,023.16 and 229,469.75 is: 316,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,600.01 : 539,023.16 = 229,469.75 : x
  2. Step 2: Convert to fraction form
    390,600.01/539,023.16 = 229,469.75/x
  3. Step 3: Cross multiply
    390,600.01x = 539,023.16 × 229,469.75
  4. Step 4: Simplify right side
    390,600.01x = 123,689,507,647.97
  5. Step 5: Solve for x
    x = 123,689,507,647.97/390,600.01
  6. Step 6: Final answer
    x = 316,665.40

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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.