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Finding the Fourth Proportional to 499,271.76, 689,005.96 and 272,917.24

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Solution

The fourth proportional to 499,271.76, 689,005.96 and 272,917.24 is: 376,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,271.76 : 689,005.96 = 272,917.24 : x
  2. Step 2: Convert to fraction form
    499,271.76/689,005.96 = 272,917.24/x
  3. Step 3: Cross multiply
    499,271.76x = 689,005.96 × 272,917.24
  4. Step 4: Simplify right side
    499,271.76x = 188,041,604,946.75
  5. Step 5: Solve for x
    x = 188,041,604,946.75/499,271.76
  6. Step 6: Final answer
    x = 376,631.77

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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.