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Finding the Fourth Proportional to 318,019.60, 477,029.40 and 193,603.60

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Solution

The fourth proportional to 318,019.60, 477,029.40 and 193,603.60 is: 290,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,019.60 : 477,029.40 = 193,603.60 : x
  2. Step 2: Convert to fraction form
    318,019.60/477,029.40 = 193,603.60/x
  3. Step 3: Cross multiply
    318,019.60x = 477,029.40 × 193,603.60
  4. Step 4: Simplify right side
    318,019.60x = 92,354,609,145.84
  5. Step 5: Solve for x
    x = 92,354,609,145.84/318,019.60
  6. Step 6: Final answer
    x = 290,405.40

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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.