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Finding the Fourth Proportional to 306,695.81, 423,210.53 and 226,166.69

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Solution

The fourth proportional to 306,695.81, 423,210.53 and 226,166.69 is: 312,088.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,695.81 : 423,210.53 = 226,166.69 : x
  2. Step 2: Convert to fraction form
    306,695.81/423,210.53 = 226,166.69/x
  3. Step 3: Cross multiply
    306,695.81x = 423,210.53 × 226,166.69
  4. Step 4: Simplify right side
    306,695.81x = 95,716,121,496.36
  5. Step 5: Solve for x
    x = 95,716,121,496.36/306,695.81
  6. Step 6: Final answer
    x = 312,088.13

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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.