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Finding the Fourth Proportional to 306,406.22, 422,667.90 and 183,866.90

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Solution

The fourth proportional to 306,406.22, 422,667.90 and 183,866.90 is: 253,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,406.22 : 422,667.90 = 183,866.90 : x
  2. Step 2: Convert to fraction form
    306,406.22/422,667.90 = 183,866.90/x
  3. Step 3: Cross multiply
    306,406.22x = 422,667.90 × 183,866.90
  4. Step 4: Simplify right side
    306,406.22x = 77,714,636,502.51
  5. Step 5: Solve for x
    x = 77,714,636,502.51/306,406.22
  6. Step 6: Final answer
    x = 253,632.70

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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.