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Finding the Fourth Proportional to 242,994.80, 364,492.20 and 85,166.30

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Solution

The fourth proportional to 242,994.80, 364,492.20 and 85,166.30 is: 127,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,994.80 : 364,492.20 = 85,166.30 : x
  2. Step 2: Convert to fraction form
    242,994.80/364,492.20 = 85,166.30/x
  3. Step 3: Cross multiply
    242,994.80x = 364,492.20 × 85,166.30
  4. Step 4: Simplify right side
    242,994.80x = 31,042,452,052.86
  5. Step 5: Solve for x
    x = 31,042,452,052.86/242,994.80
  6. Step 6: Final answer
    x = 127,749.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.