Home / 305,621.47-421,801.49-183,118.69

Finding the Fourth Proportional to 305,621.47, 421,801.49 and 183,118.69

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Solution

The fourth proportional to 305,621.47, 421,801.49 and 183,118.69 is: 252,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,621.47 : 421,801.49 = 183,118.69 : x
  2. Step 2: Convert to fraction form
    305,621.47/421,801.49 = 183,118.69/x
  3. Step 3: Cross multiply
    305,621.47x = 421,801.49 × 183,118.69
  4. Step 4: Simplify right side
    305,621.47x = 77,239,736,288.85
  5. Step 5: Solve for x
    x = 77,239,736,288.85/305,621.47
  6. Step 6: Final answer
    x = 252,730.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.