Home / 420,981.60-580,955.19-239,693.61

Finding the Fourth Proportional to 420,981.60, 580,955.19 and 239,693.61

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Solution

The fourth proportional to 420,981.60, 580,955.19 and 239,693.61 is: 330,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,981.60 : 580,955.19 = 239,693.61 : x
  2. Step 2: Convert to fraction form
    420,981.60/580,955.19 = 239,693.61/x
  3. Step 3: Cross multiply
    420,981.60x = 580,955.19 × 239,693.61
  4. Step 4: Simplify right side
    420,981.60x = 139,251,248,019.07
  5. Step 5: Solve for x
    x = 139,251,248,019.07/420,981.60
  6. Step 6: Final answer
    x = 330,777.51

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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.