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Finding the Fourth Proportional to 265,543.05, 398,314.58 and 255,045.45

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Solution

The fourth proportional to 265,543.05, 398,314.58 and 255,045.45 is: 382,568.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,543.05 : 398,314.58 = 255,045.45 : x
  2. Step 2: Convert to fraction form
    265,543.05/398,314.58 = 255,045.45/x
  3. Step 3: Cross multiply
    265,543.05x = 398,314.58 × 255,045.45
  4. Step 4: Simplify right side
    265,543.05x = 101,588,320,022.43
  5. Step 5: Solve for x
    x = 101,588,320,022.43/265,543.05
  6. Step 6: Final answer
    x = 382,568.18

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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.