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Finding the Fourth Proportional to 218,315.60, 301,259.20 and 122,803.84

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Solution

The fourth proportional to 218,315.60, 301,259.20 and 122,803.84 is: 169,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,315.60 : 301,259.20 = 122,803.84 : x
  2. Step 2: Convert to fraction form
    218,315.60/301,259.20 = 122,803.84/x
  3. Step 3: Cross multiply
    218,315.60x = 301,259.20 × 122,803.84
  4. Step 4: Simplify right side
    218,315.60x = 36,995,786,595.33
  5. Step 5: Solve for x
    x = 36,995,786,595.33/218,315.60
  6. Step 6: Final answer
    x = 169,460.11

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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.