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Finding the Fourth Proportional to 539,198.64, 744,138.59 and 306,698.39

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Solution

The fourth proportional to 539,198.64, 744,138.59 and 306,698.39 is: 423,269.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,198.64 : 744,138.59 = 306,698.39 : x
  2. Step 2: Convert to fraction form
    539,198.64/744,138.59 = 306,698.39/x
  3. Step 3: Cross multiply
    539,198.64x = 744,138.59 × 306,698.39
  4. Step 4: Simplify right side
    539,198.64x = 228,226,108,746.90
  5. Step 5: Solve for x
    x = 228,226,108,746.90/539,198.64
  6. Step 6: Final answer
    x = 423,269.07

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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.