Home / 305,320.16-421,255.68-197,894.72

Finding the Fourth Proportional to 305,320.16, 421,255.68 and 197,894.72

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Solution

The fourth proportional to 305,320.16, 421,255.68 and 197,894.72 is: 273,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,320.16 : 421,255.68 = 197,894.72 : x
  2. Step 2: Convert to fraction form
    305,320.16/421,255.68 = 197,894.72/x
  3. Step 3: Cross multiply
    305,320.16x = 421,255.68 × 197,894.72
  4. Step 4: Simplify right side
    305,320.16x = 83,364,274,842.01
  5. Step 5: Solve for x
    x = 83,364,274,842.01/305,320.16
  6. Step 6: Final answer
    x = 273,038.88

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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.