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Finding the Fourth Proportional to 313,660.72, 432,858.72 and 186,336.64

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Solution

The fourth proportional to 313,660.72, 432,858.72 and 186,336.64 is: 257,148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,660.72 : 432,858.72 = 186,336.64 : x
  2. Step 2: Convert to fraction form
    313,660.72/432,858.72 = 186,336.64/x
  3. Step 3: Cross multiply
    313,660.72x = 432,858.72 × 186,336.64
  4. Step 4: Simplify right side
    313,660.72x = 80,657,439,479.50
  5. Step 5: Solve for x
    x = 80,657,439,479.50/313,660.72
  6. Step 6: Final answer
    x = 257,148.68

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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.