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Finding the Fourth Proportional to 303,608.70, 455,688.45 and 153,953.10

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Solution

The fourth proportional to 303,608.70, 455,688.45 and 153,953.10 is: 231,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,608.70 : 455,688.45 = 153,953.10 : x
  2. Step 2: Convert to fraction form
    303,608.70/455,688.45 = 153,953.10/x
  3. Step 3: Cross multiply
    303,608.70x = 455,688.45 × 153,953.10
  4. Step 4: Simplify right side
    303,608.70x = 70,154,649,511.70
  5. Step 5: Solve for x
    x = 70,154,649,511.70/303,608.70
  6. Step 6: Final answer
    x = 231,069.30

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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.