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Finding the Fourth Proportional to 303,368.70, 455,709.15 and 214,795.20

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Solution

The fourth proportional to 303,368.70, 455,709.15 and 214,795.20 is: 322,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,368.70 : 455,709.15 = 214,795.20 : x
  2. Step 2: Convert to fraction form
    303,368.70/455,709.15 = 214,795.20/x
  3. Step 3: Cross multiply
    303,368.70x = 455,709.15 × 214,795.20
  4. Step 4: Simplify right side
    303,368.70x = 97,884,138,016.08
  5. Step 5: Solve for x
    x = 97,884,138,016.08/303,368.70
  6. Step 6: Final answer
    x = 322,657.34

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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.