Home / 303,417.20-455,134.01-78,772.65

Finding the Fourth Proportional to 303,417.20, 455,134.01 and 78,772.65

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Solution

The fourth proportional to 303,417.20, 455,134.01 and 78,772.65 is: 118,161.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,417.20 : 455,134.01 = 78,772.65 : x
  2. Step 2: Convert to fraction form
    303,417.20/455,134.01 = 78,772.65/x
  3. Step 3: Cross multiply
    303,417.20x = 455,134.01 × 78,772.65
  4. Step 4: Simplify right side
    303,417.20x = 35,852,111,678.96
  5. Step 5: Solve for x
    x = 35,852,111,678.96/303,417.20
  6. Step 6: Final answer
    x = 118,161.11

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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.