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Finding the Fourth Proportional to 661,405.50, 992,108.25 and 162,769.50

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Solution

The fourth proportional to 661,405.50, 992,108.25 and 162,769.50 is: 244,154.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,405.50 : 992,108.25 = 162,769.50 : x
  2. Step 2: Convert to fraction form
    661,405.50/992,108.25 = 162,769.50/x
  3. Step 3: Cross multiply
    661,405.50x = 992,108.25 × 162,769.50
  4. Step 4: Simplify right side
    661,405.50x = 161,484,963,798.38
  5. Step 5: Solve for x
    x = 161,484,963,798.38/661,405.50
  6. Step 6: Final answer
    x = 244,154.25

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Similar ratio
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1.5x scale

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.