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Finding the Fourth Proportional to 313,139.70, 432,130.86 and 169,896.65

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Solution

The fourth proportional to 313,139.70, 432,130.86 and 169,896.65 is: 234,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,139.70 : 432,130.86 = 169,896.65 : x
  2. Step 2: Convert to fraction form
    313,139.70/432,130.86 = 169,896.65/x
  3. Step 3: Cross multiply
    313,139.70x = 432,130.86 × 169,896.65
  4. Step 4: Simplify right side
    313,139.70x = 73,417,583,314.96
  5. Step 5: Solve for x
    x = 73,417,583,314.96/313,139.70
  6. Step 6: Final answer
    x = 234,456.33

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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.