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Finding the Fourth Proportional to 279,269.65, 385,392.11 and 151,946.15

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Solution

The fourth proportional to 279,269.65, 385,392.11 and 151,946.15 is: 209,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,269.65 : 385,392.11 = 151,946.15 : x
  2. Step 2: Convert to fraction form
    279,269.65/385,392.11 = 151,946.15/x
  3. Step 3: Cross multiply
    279,269.65x = 385,392.11 × 151,946.15
  4. Step 4: Simplify right side
    279,269.65x = 58,558,849,415.65
  5. Step 5: Solve for x
    x = 58,558,849,415.65/279,269.65
  6. Step 6: Final answer
    x = 209,685.69

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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.