Home / 382,802.13-528,267.15-221,665.74

Finding the Fourth Proportional to 382,802.13, 528,267.15 and 221,665.74

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Solution

The fourth proportional to 382,802.13, 528,267.15 and 221,665.74 is: 305,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,802.13 : 528,267.15 = 221,665.74 : x
  2. Step 2: Convert to fraction form
    382,802.13/528,267.15 = 221,665.74/x
  3. Step 3: Cross multiply
    382,802.13x = 528,267.15 × 221,665.74
  4. Step 4: Simplify right side
    382,802.13x = 117,098,728,722.44
  5. Step 5: Solve for x
    x = 117,098,728,722.44/382,802.13
  6. Step 6: Final answer
    x = 305,898.84

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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.