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Finding the Fourth Proportional to 314,782.34, 434,386.97 and 171,539.30

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Solution

The fourth proportional to 314,782.34, 434,386.97 and 171,539.30 is: 236,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,782.34 : 434,386.97 = 171,539.30 : x
  2. Step 2: Convert to fraction form
    314,782.34/434,386.97 = 171,539.30/x
  3. Step 3: Cross multiply
    314,782.34x = 434,386.97 × 171,539.30
  4. Step 4: Simplify right side
    314,782.34x = 74,514,433,733.29
  5. Step 5: Solve for x
    x = 74,514,433,733.29/314,782.34
  6. Step 6: Final answer
    x = 236,717.33

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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.