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Finding the Fourth Proportional to 512,450.40, 768,675.60 and 157,465.20

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Solution

The fourth proportional to 512,450.40, 768,675.60 and 157,465.20 is: 236,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,450.40 : 768,675.60 = 157,465.20 : x
  2. Step 2: Convert to fraction form
    512,450.40/768,675.60 = 157,465.20/x
  3. Step 3: Cross multiply
    512,450.40x = 768,675.60 × 157,465.20
  4. Step 4: Simplify right side
    512,450.40x = 121,039,657,089.12
  5. Step 5: Solve for x
    x = 121,039,657,089.12/512,450.40
  6. Step 6: Final answer
    x = 236,197.80

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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.