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Finding the Fourth Proportional to 303,913.80, 455,870.70 and 146,449.80

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Solution

The fourth proportional to 303,913.80, 455,870.70 and 146,449.80 is: 219,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,913.80 : 455,870.70 = 146,449.80 : x
  2. Step 2: Convert to fraction form
    303,913.80/455,870.70 = 146,449.80/x
  3. Step 3: Cross multiply
    303,913.80x = 455,870.70 × 146,449.80
  4. Step 4: Simplify right side
    303,913.80x = 66,762,172,840.86
  5. Step 5: Solve for x
    x = 66,762,172,840.86/303,913.80
  6. Step 6: Final answer
    x = 219,674.70

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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.