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Finding the Fourth Proportional to 499,368.78, 689,176.35 and 273,048.30

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Solution

The fourth proportional to 499,368.78, 689,176.35 and 273,048.30 is: 376,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,368.78 : 689,176.35 = 273,048.30 : x
  2. Step 2: Convert to fraction form
    499,368.78/689,176.35 = 273,048.30/x
  3. Step 3: Cross multiply
    499,368.78x = 689,176.35 × 273,048.30
  4. Step 4: Simplify right side
    499,368.78x = 188,178,430,767.71
  5. Step 5: Solve for x
    x = 188,178,430,767.71/499,368.78
  6. Step 6: Final answer
    x = 376,832.59

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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.