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Finding the Fourth Proportional to 319,092.30, 440,347.47 and 173,898.15

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Solution

The fourth proportional to 319,092.30, 440,347.47 and 173,898.15 is: 239,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,092.30 : 440,347.47 = 173,898.15 : x
  2. Step 2: Convert to fraction form
    319,092.30/440,347.47 = 173,898.15/x
  3. Step 3: Cross multiply
    319,092.30x = 440,347.47 × 173,898.15
  4. Step 4: Simplify right side
    319,092.30x = 76,575,610,390.18
  5. Step 5: Solve for x
    x = 76,575,610,390.18/319,092.30
  6. Step 6: Final answer
    x = 239,979.50

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1.5x scale

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.