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Finding the Fourth Proportional to 611,442.70, 917,164.05 and 168,210.70

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Solution

The fourth proportional to 611,442.70, 917,164.05 and 168,210.70 is: 252,316.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,442.70 : 917,164.05 = 168,210.70 : x
  2. Step 2: Convert to fraction form
    611,442.70/917,164.05 = 168,210.70/x
  3. Step 3: Cross multiply
    611,442.70x = 917,164.05 × 168,210.70
  4. Step 4: Simplify right side
    611,442.70x = 154,276,806,865.34
  5. Step 5: Solve for x
    x = 154,276,806,865.34/611,442.70
  6. Step 6: Final answer
    x = 252,316.05

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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.