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Finding the Fourth Proportional to 638,277.76, 957,440.94 and 238,876.48

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Solution

The fourth proportional to 638,277.76, 957,440.94 and 238,876.48 is: 358,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,277.76 : 957,440.94 = 238,876.48 : x
  2. Step 2: Convert to fraction form
    638,277.76/957,440.94 = 238,876.48/x
  3. Step 3: Cross multiply
    638,277.76x = 957,440.94 × 238,876.48
  4. Step 4: Simplify right side
    638,277.76x = 228,710,121,555.09
  5. Step 5: Solve for x
    x = 228,710,121,555.09/638,277.76
  6. Step 6: Final answer
    x = 358,323.81

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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.