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Finding the Fourth Proportional to 306,697.31, 423,212.59 and 226,168.19

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Solution

The fourth proportional to 306,697.31, 423,212.59 and 226,168.19 is: 312,090.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,697.31 : 423,212.59 = 226,168.19 : x
  2. Step 2: Convert to fraction form
    306,697.31/423,212.59 = 226,168.19/x
  3. Step 3: Cross multiply
    306,697.31x = 423,212.59 × 226,168.19
  4. Step 4: Simplify right side
    306,697.31x = 95,717,225,465.51
  5. Step 5: Solve for x
    x = 95,717,225,465.51/306,697.31
  6. Step 6: Final answer
    x = 312,090.20

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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.