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Finding the Fourth Proportional to 518,187.98, 715,080.52 and 288,733.40

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Solution

The fourth proportional to 518,187.98, 715,080.52 and 288,733.40 is: 398,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,187.98 : 715,080.52 = 288,733.40 : x
  2. Step 2: Convert to fraction form
    518,187.98/715,080.52 = 288,733.40/x
  3. Step 3: Cross multiply
    518,187.98x = 715,080.52 × 288,733.40
  4. Step 4: Simplify right side
    518,187.98x = 206,467,629,813.37
  5. Step 5: Solve for x
    x = 206,467,629,813.37/518,187.98
  6. Step 6: Final answer
    x = 398,441.57

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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.