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Finding the Fourth Proportional to 499,214.88, 688,916.88 and 272,860.38

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Solution

The fourth proportional to 499,214.88, 688,916.88 and 272,860.38 is: 376,547.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,214.88 : 688,916.88 = 272,860.38 : x
  2. Step 2: Convert to fraction form
    499,214.88/688,916.88 = 272,860.38/x
  3. Step 3: Cross multiply
    499,214.88x = 688,916.88 × 272,860.38
  4. Step 4: Simplify right side
    499,214.88x = 187,978,121,665.21
  5. Step 5: Solve for x
    x = 187,978,121,665.21/499,214.88
  6. Step 6: Final answer
    x = 376,547.51

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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.