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Finding the Fourth Proportional to 266,025.80, 399,038.70 and 255,528.20

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Solution

The fourth proportional to 266,025.80, 399,038.70 and 255,528.20 is: 383,292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,025.80 : 399,038.70 = 255,528.20 : x
  2. Step 2: Convert to fraction form
    266,025.80/399,038.70 = 255,528.20/x
  3. Step 3: Cross multiply
    266,025.80x = 399,038.70 × 255,528.20
  4. Step 4: Simplify right side
    266,025.80x = 101,965,640,741.34
  5. Step 5: Solve for x
    x = 101,965,640,741.34/266,025.80
  6. Step 6: Final answer
    x = 383,292.30

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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.