Home / 219,485.81-302,889.38-122,689.65

Finding the Fourth Proportional to 219,485.81, 302,889.38 and 122,689.65

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Solution

The fourth proportional to 219,485.81, 302,889.38 and 122,689.65 is: 169,311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,485.81 : 302,889.38 = 122,689.65 : x
  2. Step 2: Convert to fraction form
    219,485.81/302,889.38 = 122,689.65/x
  3. Step 3: Cross multiply
    219,485.81x = 302,889.38 × 122,689.65
  4. Step 4: Simplify right side
    219,485.81x = 37,161,392,020.92
  5. Step 5: Solve for x
    x = 37,161,392,020.92/219,485.81
  6. Step 6: Final answer
    x = 169,311.14

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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.