Home / 420,384.67-580,143.13-229,410.36

Finding the Fourth Proportional to 420,384.67, 580,143.13 and 229,410.36

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Solution

The fourth proportional to 420,384.67, 580,143.13 and 229,410.36 is: 316,593.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,384.67 : 580,143.13 = 229,410.36 : x
  2. Step 2: Convert to fraction form
    420,384.67/580,143.13 = 229,410.36/x
  3. Step 3: Cross multiply
    420,384.67x = 580,143.13 × 229,410.36
  4. Step 4: Simplify right side
    420,384.67x = 133,090,843,731.30
  5. Step 5: Solve for x
    x = 133,090,843,731.30/420,384.67
  6. Step 6: Final answer
    x = 316,593.00

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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.