Home / 219,285.24-302,611.32-128,623.83

Finding the Fourth Proportional to 219,285.24, 302,611.32 and 128,623.83

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Solution

The fourth proportional to 219,285.24, 302,611.32 and 128,623.83 is: 177,499.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,285.24 : 302,611.32 = 128,623.83 : x
  2. Step 2: Convert to fraction form
    219,285.24/302,611.32 = 128,623.83/x
  3. Step 3: Cross multiply
    219,285.24x = 302,611.32 × 128,623.83
  4. Step 4: Simplify right side
    219,285.24x = 38,923,026,979.76
  5. Step 5: Solve for x
    x = 38,923,026,979.76/219,285.24
  6. Step 6: Final answer
    x = 177,499.53

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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.