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Finding the Fourth Proportional to 546,905.70, 820,358.55 and 147,608.10

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Solution

The fourth proportional to 546,905.70, 820,358.55 and 147,608.10 is: 221,412.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,905.70 : 820,358.55 = 147,608.10 : x
  2. Step 2: Convert to fraction form
    546,905.70/820,358.55 = 147,608.10/x
  3. Step 3: Cross multiply
    546,905.70x = 820,358.55 × 147,608.10
  4. Step 4: Simplify right side
    546,905.70x = 121,091,566,884.26
  5. Step 5: Solve for x
    x = 121,091,566,884.26/546,905.70
  6. Step 6: Final answer
    x = 221,412.15

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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.