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Finding the Fourth Proportional to 219,051.63, 328,577.45 and 85,994.55

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Solution

The fourth proportional to 219,051.63, 328,577.45 and 85,994.55 is: 128,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,051.63 : 328,577.45 = 85,994.55 : x
  2. Step 2: Convert to fraction form
    219,051.63/328,577.45 = 85,994.55/x
  3. Step 3: Cross multiply
    219,051.63x = 328,577.45 × 85,994.55
  4. Step 4: Simplify right side
    219,051.63x = 28,255,869,522.92
  5. Step 5: Solve for x
    x = 28,255,869,522.92/219,051.63
  6. Step 6: Final answer
    x = 128,991.83

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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.