Home / 420,280.04-579,962.80-239,036.06

Finding the Fourth Proportional to 420,280.04, 579,962.80 and 239,036.06

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Solution

The fourth proportional to 420,280.04, 579,962.80 and 239,036.06 is: 329,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,280.04 : 579,962.80 = 239,036.06 : x
  2. Step 2: Convert to fraction form
    420,280.04/579,962.80 = 239,036.06/x
  3. Step 3: Cross multiply
    420,280.04x = 579,962.80 × 239,036.06
  4. Step 4: Simplify right side
    420,280.04x = 138,632,022,658.57
  5. Step 5: Solve for x
    x = 138,632,022,658.57/420,280.04
  6. Step 6: Final answer
    x = 329,856.31

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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.