Home / 290,623.80-435,935.70-255,631.80

Finding the Fourth Proportional to 290,623.80, 435,935.70 and 255,631.80

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Solution

The fourth proportional to 290,623.80, 435,935.70 and 255,631.80 is: 383,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,623.80 : 435,935.70 = 255,631.80 : x
  2. Step 2: Convert to fraction form
    290,623.80/435,935.70 = 255,631.80/x
  3. Step 3: Cross multiply
    290,623.80x = 435,935.70 × 255,631.80
  4. Step 4: Simplify right side
    290,623.80x = 111,439,027,675.26
  5. Step 5: Solve for x
    x = 111,439,027,675.26/290,623.80
  6. Step 6: Final answer
    x = 383,447.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.