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Finding the Fourth Proportional to 223,378.32, 308,263.08 and 122,782.80

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Solution

The fourth proportional to 223,378.32, 308,263.08 and 122,782.80 is: 169,440.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,378.32 : 308,263.08 = 122,782.80 : x
  2. Step 2: Convert to fraction form
    223,378.32/308,263.08 = 122,782.80/x
  3. Step 3: Cross multiply
    223,378.32x = 308,263.08 × 122,782.80
  4. Step 4: Simplify right side
    223,378.32x = 37,849,404,099.02
  5. Step 5: Solve for x
    x = 37,849,404,099.02/223,378.32
  6. Step 6: Final answer
    x = 169,440.81

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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.