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Finding the Fourth Proportional to 388,565.22, 532,336.21 and 374,003.65

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Solution

The fourth proportional to 388,565.22, 532,336.21 and 374,003.65 is: 512,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,565.22 : 532,336.21 = 374,003.65 : x
  2. Step 2: Convert to fraction form
    388,565.22/532,336.21 = 374,003.65/x
  3. Step 3: Cross multiply
    388,565.22x = 532,336.21 × 374,003.65
  4. Step 4: Simplify right side
    388,565.22x = 199,095,686,700.09
  5. Step 5: Solve for x
    x = 199,095,686,700.09/388,565.22
  6. Step 6: Final answer
    x = 512,386.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.