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Finding the Fourth Proportional to 201,649.60, 302,474.40 and 191,808.10

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Solution

The fourth proportional to 201,649.60, 302,474.40 and 191,808.10 is: 287,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,649.60 : 302,474.40 = 191,808.10 : x
  2. Step 2: Convert to fraction form
    201,649.60/302,474.40 = 191,808.10/x
  3. Step 3: Cross multiply
    201,649.60x = 302,474.40 × 191,808.10
  4. Step 4: Simplify right side
    201,649.60x = 58,017,039,962.64
  5. Step 5: Solve for x
    x = 58,017,039,962.64/201,649.60
  6. Step 6: Final answer
    x = 287,712.15

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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.