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Finding the Fourth Proportional to 499,618.58, 689,483.70 and 273,278.66

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Solution

The fourth proportional to 499,618.58, 689,483.70 and 273,278.66 is: 377,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,618.58 : 689,483.70 = 273,278.66 : x
  2. Step 2: Convert to fraction form
    499,618.58/689,483.70 = 273,278.66/x
  3. Step 3: Cross multiply
    499,618.58x = 689,483.70 × 273,278.66
  4. Step 4: Simplify right side
    499,618.58x = 188,421,178,180.42
  5. Step 5: Solve for x
    x = 188,421,178,180.42/499,618.58
  6. Step 6: Final answer
    x = 377,130.05

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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.