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Finding the Fourth Proportional to 371,700.09, 512,929.62 and 210,551.90

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Solution

The fourth proportional to 371,700.09, 512,929.62 and 210,551.90 is: 290,552.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,700.09 : 512,929.62 = 210,551.90 : x
  2. Step 2: Convert to fraction form
    371,700.09/512,929.62 = 210,551.90/x
  3. Step 3: Cross multiply
    371,700.09x = 512,929.62 × 210,551.90
  4. Step 4: Simplify right side
    371,700.09x = 107,998,303,492.63
  5. Step 5: Solve for x
    x = 107,998,303,492.63/371,700.09
  6. Step 6: Final answer
    x = 290,552.27

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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.