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Finding the Fourth Proportional to 437,638.70, 655,145.85 and 260,054.30

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Solution

The fourth proportional to 437,638.70, 655,145.85 and 260,054.30 is: 389,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,638.70 : 655,145.85 = 260,054.30 : x
  2. Step 2: Convert to fraction form
    437,638.70/655,145.85 = 260,054.30/x
  3. Step 3: Cross multiply
    437,638.70x = 655,145.85 × 260,054.30
  4. Step 4: Simplify right side
    437,638.70x = 170,373,495,419.66
  5. Step 5: Solve for x
    x = 170,373,495,419.66/437,638.70
  6. Step 6: Final answer
    x = 389,301.71

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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.