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Finding the Fourth Proportional to 375,625.90, 518,365.71 and 203,543.93

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Solution

The fourth proportional to 375,625.90, 518,365.71 and 203,543.93 is: 280,891.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,625.90 : 518,365.71 = 203,543.93 : x
  2. Step 2: Convert to fraction form
    375,625.90/518,365.71 = 203,543.93/x
  3. Step 3: Cross multiply
    375,625.90x = 518,365.71 × 203,543.93
  4. Step 4: Simplify right side
    375,625.90x = 105,510,193,790.64
  5. Step 5: Solve for x
    x = 105,510,193,790.64/375,625.90
  6. Step 6: Final answer
    x = 280,891.69

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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.