Home / 380,930.48-525,690-208,864.16

Finding the Fourth Proportional to 380,930.48, 525,690 and 208,864.16

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Solution

The fourth proportional to 380,930.48, 525,690 and 208,864.16 is: 288,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,930.48 : 525,690 = 208,864.16 : x
  2. Step 2: Convert to fraction form
    380,930.48/525,690 = 208,864.16/x
  3. Step 3: Cross multiply
    380,930.48x = 525,690 × 208,864.16
  4. Step 4: Simplify right side
    380,930.48x = 109,797,797,641.95
  5. Step 5: Solve for x
    x = 109,797,797,641.95/380,930.48
  6. Step 6: Final answer
    x = 288,235.79

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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.