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Finding the Fourth Proportional to 303,471.60, 455,207.40 and 93,109.20

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Solution

The fourth proportional to 303,471.60, 455,207.40 and 93,109.20 is: 139,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,471.60 : 455,207.40 = 93,109.20 : x
  2. Step 2: Convert to fraction form
    303,471.60/455,207.40 = 93,109.20/x
  3. Step 3: Cross multiply
    303,471.60x = 455,207.40 × 93,109.20
  4. Step 4: Simplify right side
    303,471.60x = 42,383,996,848.08
  5. Step 5: Solve for x
    x = 42,383,996,848.08/303,471.60
  6. Step 6: Final answer
    x = 139,663.80

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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.