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Finding the Fourth Proportional to 386,068.34, 578,905.04 and 161,367.46

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Solution

The fourth proportional to 386,068.34, 578,905.04 and 161,367.46 is: 241,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,068.34 : 578,905.04 = 161,367.46 : x
  2. Step 2: Convert to fraction form
    386,068.34/578,905.04 = 161,367.46/x
  3. Step 3: Cross multiply
    386,068.34x = 578,905.04 × 161,367.46
  4. Step 4: Simplify right side
    386,068.34x = 93,416,434,842.15
  5. Step 5: Solve for x
    x = 93,416,434,842.15/386,068.34
  6. Step 6: Final answer
    x = 241,968.65

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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.