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Finding the Fourth Proportional to 362,128.69, 499,781.84 and 209,166.71

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Solution

The fourth proportional to 362,128.69, 499,781.84 and 209,166.71 is: 288,675.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,128.69 : 499,781.84 = 209,166.71 : x
  2. Step 2: Convert to fraction form
    362,128.69/499,781.84 = 209,166.71/x
  3. Step 3: Cross multiply
    362,128.69x = 499,781.84 × 209,166.71
  4. Step 4: Simplify right side
    362,128.69x = 104,537,721,907.42
  5. Step 5: Solve for x
    x = 104,537,721,907.42/362,128.69
  6. Step 6: Final answer
    x = 288,675.61

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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.