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Finding the Fourth Proportional to 296,860.92, 445,280.42 and 128,423.64

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Solution

The fourth proportional to 296,860.92, 445,280.42 and 128,423.64 is: 192,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,860.92 : 445,280.42 = 128,423.64 : x
  2. Step 2: Convert to fraction form
    296,860.92/445,280.42 = 128,423.64/x
  3. Step 3: Cross multiply
    296,860.92x = 445,280.42 × 128,423.64
  4. Step 4: Simplify right side
    296,860.92x = 57,184,532,357.13
  5. Step 5: Solve for x
    x = 57,184,532,357.13/296,860.92
  6. Step 6: Final answer
    x = 192,630.72

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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.