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Finding the Fourth Proportional to 499,293, 689,026.80 and 272,938.50

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Solution

The fourth proportional to 499,293, 689,026.80 and 272,938.50 is: 376,656.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,293 : 689,026.80 = 272,938.50 : x
  2. Step 2: Convert to fraction form
    499,293/689,026.80 = 272,938.50/x
  3. Step 3: Cross multiply
    499,293x = 689,026.80 × 272,938.50
  4. Step 4: Simplify right side
    499,293x = 188,061,941,251.80
  5. Step 5: Solve for x
    x = 188,061,941,251.80/499,293
  6. Step 6: Final answer
    x = 376,656.47

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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.