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Finding the Fourth Proportional to 235,139.72, 324,491.62 and 127,709

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Solution

The fourth proportional to 235,139.72, 324,491.62 and 127,709 is: 176,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,139.72 : 324,491.62 = 127,709 : x
  2. Step 2: Convert to fraction form
    235,139.72/324,491.62 = 127,709/x
  3. Step 3: Cross multiply
    235,139.72x = 324,491.62 × 127,709
  4. Step 4: Simplify right side
    235,139.72x = 41,440,500,298.58
  5. Step 5: Solve for x
    x = 41,440,500,298.58/235,139.72
  6. Step 6: Final answer
    x = 176,237.77

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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.