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Finding the Fourth Proportional to 303,973.60, 455,917.20 and 104,303.20

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Solution

The fourth proportional to 303,973.60, 455,917.20 and 104,303.20 is: 156,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,973.60 : 455,917.20 = 104,303.20 : x
  2. Step 2: Convert to fraction form
    303,973.60/455,917.20 = 104,303.20/x
  3. Step 3: Cross multiply
    303,973.60x = 455,917.20 × 104,303.20
  4. Step 4: Simplify right side
    303,973.60x = 47,553,622,895.04
  5. Step 5: Solve for x
    x = 47,553,622,895.04/303,973.60
  6. Step 6: Final answer
    x = 156,439.98

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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.