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Finding the Fourth Proportional to 361,663.51, 542,421.15 and 136,946.44

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Solution

The fourth proportional to 361,663.51, 542,421.15 and 136,946.44 is: 205,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,663.51 : 542,421.15 = 136,946.44 : x
  2. Step 2: Convert to fraction form
    361,663.51/542,421.15 = 136,946.44/x
  3. Step 3: Cross multiply
    361,663.51x = 542,421.15 × 136,946.44
  4. Step 4: Simplify right side
    361,663.51x = 74,282,645,473.21
  5. Step 5: Solve for x
    x = 74,282,645,473.21/361,663.51
  6. Step 6: Final answer
    x = 205,391.60

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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.