Home / 420,803.13-580,712.03-239,526.73

Finding the Fourth Proportional to 420,803.13, 580,712.03 and 239,526.73

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Solution

The fourth proportional to 420,803.13, 580,712.03 and 239,526.73 is: 330,549.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,803.13 : 580,712.03 = 239,526.73 : x
  2. Step 2: Convert to fraction form
    420,803.13/580,712.03 = 239,526.73/x
  3. Step 3: Cross multiply
    420,803.13x = 580,712.03 × 239,526.73
  4. Step 4: Simplify right side
    420,803.13x = 139,096,054,597.52
  5. Step 5: Solve for x
    x = 139,096,054,597.52/420,803.13
  6. Step 6: Final answer
    x = 330,549.00

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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.