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Finding the Fourth Proportional to 660,353.40, 990,530.10 and 161,717.40

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Solution

The fourth proportional to 660,353.40, 990,530.10 and 161,717.40 is: 242,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,353.40 : 990,530.10 = 161,717.40 : x
  2. Step 2: Convert to fraction form
    660,353.40/990,530.10 = 161,717.40/x
  3. Step 3: Cross multiply
    660,353.40x = 990,530.10 × 161,717.40
  4. Step 4: Simplify right side
    660,353.40x = 160,185,952,393.74
  5. Step 5: Solve for x
    x = 160,185,952,393.74/660,353.40
  6. Step 6: Final answer
    x = 242,576.10

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Similar ratio
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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.