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Finding the Fourth Proportional to 636,309.54, 955,155.93 and 257,491.05

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Solution

The fourth proportional to 636,309.54, 955,155.93 and 257,491.05 is: 386,516.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,309.54 : 955,155.93 = 257,491.05 : x
  2. Step 2: Convert to fraction form
    636,309.54/955,155.93 = 257,491.05/x
  3. Step 3: Cross multiply
    636,309.54x = 955,155.93 × 257,491.05
  4. Step 4: Simplify right side
    636,309.54x = 245,944,103,329.43
  5. Step 5: Solve for x
    x = 245,944,103,329.43/636,309.54
  6. Step 6: Final answer
    x = 386,516.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.