Home / 390,600.51-539,023.85-229,470.25

Finding the Fourth Proportional to 390,600.51, 539,023.85 and 229,470.25

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Solution

The fourth proportional to 390,600.51, 539,023.85 and 229,470.25 is: 316,666.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,600.51 : 539,023.85 = 229,470.25 : x
  2. Step 2: Convert to fraction form
    390,600.51/539,023.85 = 229,470.25/x
  3. Step 3: Cross multiply
    390,600.51x = 539,023.85 × 229,470.25
  4. Step 4: Simplify right side
    390,600.51x = 123,689,934,920.34
  5. Step 5: Solve for x
    x = 123,689,934,920.34/390,600.51
  6. Step 6: Final answer
    x = 316,666.09

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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.