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Finding the Fourth Proportional to 255,802.69, 383,708.90 and 87,361.57

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Solution

The fourth proportional to 255,802.69, 383,708.90 and 87,361.57 is: 131,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,802.69 : 383,708.90 = 87,361.57 : x
  2. Step 2: Convert to fraction form
    255,802.69/383,708.90 = 87,361.57/x
  3. Step 3: Cross multiply
    255,802.69x = 383,708.90 × 87,361.57
  4. Step 4: Simplify right side
    255,802.69x = 33,521,411,926.97
  5. Step 5: Solve for x
    x = 33,521,411,926.97/255,802.69
  6. Step 6: Final answer
    x = 131,044.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.