Home / 420,346.02-580,090.31-239,084.06

Finding the Fourth Proportional to 420,346.02, 580,090.31 and 239,084.06

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Solution

The fourth proportional to 420,346.02, 580,090.31 and 239,084.06 is: 329,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,346.02 : 580,090.31 = 239,084.06 : x
  2. Step 2: Convert to fraction form
    420,346.02/580,090.31 = 239,084.06/x
  3. Step 3: Cross multiply
    420,346.02x = 580,090.31 × 239,084.06
  4. Step 4: Simplify right side
    420,346.02x = 138,690,343,282.15
  5. Step 5: Solve for x
    x = 138,690,343,282.15/420,346.02
  6. Step 6: Final answer
    x = 329,943.27

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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.