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Finding the Fourth Proportional to 347,878.71, 521,892.51 and 107,987.34

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Solution

The fourth proportional to 347,878.71, 521,892.51 and 107,987.34 is: 162,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,878.71 : 521,892.51 = 107,987.34 : x
  2. Step 2: Convert to fraction form
    347,878.71/521,892.51 = 107,987.34/x
  3. Step 3: Cross multiply
    347,878.71x = 521,892.51 × 107,987.34
  4. Step 4: Simplify right side
    347,878.71x = 56,357,783,920.82
  5. Step 5: Solve for x
    x = 56,357,783,920.82/347,878.71
  6. Step 6: Final answer
    x = 162,004.12

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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.