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Finding the Fourth Proportional to 380,616.81, 525,307.16 and 219,440.37

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Solution

The fourth proportional to 380,616.81, 525,307.16 and 219,440.37 is: 302,859.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,616.81 : 525,307.16 = 219,440.37 : x
  2. Step 2: Convert to fraction form
    380,616.81/525,307.16 = 219,440.37/x
  3. Step 3: Cross multiply
    380,616.81x = 525,307.16 × 219,440.37
  4. Step 4: Simplify right side
    380,616.81x = 115,273,596,456.85
  5. Step 5: Solve for x
    x = 115,273,596,456.85/380,616.81
  6. Step 6: Final answer
    x = 302,859.97

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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.