Home / 380,721.55-525,396.36-208,612.17

Finding the Fourth Proportional to 380,721.55, 525,396.36 and 208,612.17

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Solution

The fourth proportional to 380,721.55, 525,396.36 and 208,612.17 is: 287,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,721.55 : 525,396.36 = 208,612.17 : x
  2. Step 2: Convert to fraction form
    380,721.55/525,396.36 = 208,612.17/x
  3. Step 3: Cross multiply
    380,721.55x = 525,396.36 × 208,612.17
  4. Step 4: Simplify right side
    380,721.55x = 109,604,074,769.70
  5. Step 5: Solve for x
    x = 109,604,074,769.70/380,721.55
  6. Step 6: Final answer
    x = 287,885.13

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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.