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Finding the Fourth Proportional to 638,288.76, 957,457.44 and 238,887.48

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Solution

The fourth proportional to 638,288.76, 957,457.44 and 238,887.48 is: 358,340.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,288.76 : 957,457.44 = 238,887.48 : x
  2. Step 2: Convert to fraction form
    638,288.76/957,457.44 = 238,887.48/x
  3. Step 3: Cross multiply
    638,288.76x = 957,457.44 × 238,887.48
  4. Step 4: Simplify right side
    638,288.76x = 228,724,595,048.85
  5. Step 5: Solve for x
    x = 228,724,595,048.85/638,288.76
  6. Step 6: Final answer
    x = 358,340.31

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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.