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Finding the Fourth Proportional to 243,072.60, 365,300.10 and 212,659.80

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Solution

The fourth proportional to 243,072.60, 365,300.10 and 212,659.80 is: 319,594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,072.60 : 365,300.10 = 212,659.80 : x
  2. Step 2: Convert to fraction form
    243,072.60/365,300.10 = 212,659.80/x
  3. Step 3: Cross multiply
    243,072.60x = 365,300.10 × 212,659.80
  4. Step 4: Simplify right side
    243,072.60x = 77,684,646,205.98
  5. Step 5: Solve for x
    x = 77,684,646,205.98/243,072.60
  6. Step 6: Final answer
    x = 319,594.42

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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.