Home / 313,130.40-432,121.68-169,890.72

Finding the Fourth Proportional to 313,130.40, 432,121.68 and 169,890.72

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Solution

The fourth proportional to 313,130.40, 432,121.68 and 169,890.72 is: 234,450.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,130.40 : 432,121.68 = 169,890.72 : x
  2. Step 2: Convert to fraction form
    313,130.40/432,121.68 = 169,890.72/x
  3. Step 3: Cross multiply
    313,130.40x = 432,121.68 × 169,890.72
  4. Step 4: Simplify right side
    313,130.40x = 73,413,463,342.81
  5. Step 5: Solve for x
    x = 73,413,463,342.81/313,130.40
  6. Step 6: Final answer
    x = 234,450.13

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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.