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Finding the Fourth Proportional to 384,064.64, 576,127.20 and 131,465.60

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Solution

The fourth proportional to 384,064.64, 576,127.20 and 131,465.60 is: 197,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,064.64 : 576,127.20 = 131,465.60 : x
  2. Step 2: Convert to fraction form
    384,064.64/576,127.20 = 131,465.60/x
  3. Step 3: Cross multiply
    384,064.64x = 576,127.20 × 131,465.60
  4. Step 4: Simplify right side
    384,064.64x = 75,740,908,024.32
  5. Step 5: Solve for x
    x = 75,740,908,024.32/384,064.64
  6. Step 6: Final answer
    x = 197,208.75

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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.