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Finding the Fourth Proportional to 313,885.72, 433,170.84 and 170,655.40

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Solution

The fourth proportional to 313,885.72, 433,170.84 and 170,655.40 is: 235,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,885.72 : 433,170.84 = 170,655.40 : x
  2. Step 2: Convert to fraction form
    313,885.72/433,170.84 = 170,655.40/x
  3. Step 3: Cross multiply
    313,885.72x = 433,170.84 × 170,655.40
  4. Step 4: Simplify right side
    313,885.72x = 73,922,942,968.54
  5. Step 5: Solve for x
    x = 73,922,942,968.54/313,885.72
  6. Step 6: Final answer
    x = 235,509.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.