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Finding the Fourth Proportional to 405,959.79, 609,014.49 and 136,061.58

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Solution

The fourth proportional to 405,959.79, 609,014.49 and 136,061.58 is: 204,117.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,959.79 : 609,014.49 = 136,061.58 : x
  2. Step 2: Convert to fraction form
    405,959.79/609,014.49 = 136,061.58/x
  3. Step 3: Cross multiply
    405,959.79x = 609,014.49 × 136,061.58
  4. Step 4: Simplify right side
    405,959.79x = 82,863,473,752.29
  5. Step 5: Solve for x
    x = 82,863,473,752.29/405,959.79
  6. Step 6: Final answer
    x = 204,117.44

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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.