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Finding the Fourth Proportional to 371,792.60, 513,080.16 and 210,643.64

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Solution

The fourth proportional to 371,792.60, 513,080.16 and 210,643.64 is: 290,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,792.60 : 513,080.16 = 210,643.64 : x
  2. Step 2: Convert to fraction form
    371,792.60/513,080.16 = 210,643.64/x
  3. Step 3: Cross multiply
    371,792.60x = 513,080.16 × 210,643.64
  4. Step 4: Simplify right side
    371,792.60x = 108,077,072,514.18
  5. Step 5: Solve for x
    x = 108,077,072,514.18/371,792.60
  6. Step 6: Final answer
    x = 290,691.83

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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.