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Finding the Fourth Proportional to 499,385.62, 689,155.05 and 273,031.12

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Solution

The fourth proportional to 499,385.62, 689,155.05 and 273,031.12 is: 376,784.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,385.62 : 689,155.05 = 273,031.12 : x
  2. Step 2: Convert to fraction form
    499,385.62/689,155.05 = 273,031.12/x
  3. Step 3: Cross multiply
    499,385.62x = 689,155.05 × 273,031.12
  4. Step 4: Simplify right side
    499,385.62x = 188,160,775,155.16
  5. Step 5: Solve for x
    x = 188,160,775,155.16/499,385.62
  6. Step 6: Final answer
    x = 376,784.53

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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.