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Finding the Fourth Proportional to 258,573.41, 387,602.76 and 123,479.56

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Solution

The fourth proportional to 258,573.41, 387,602.76 and 123,479.56 is: 185,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,573.41 : 387,602.76 = 123,479.56 : x
  2. Step 2: Convert to fraction form
    258,573.41/387,602.76 = 123,479.56/x
  3. Step 3: Cross multiply
    258,573.41x = 387,602.76 × 123,479.56
  4. Step 4: Simplify right side
    258,573.41x = 47,861,017,953.00
  5. Step 5: Solve for x
    x = 47,861,017,953.00/258,573.41
  6. Step 6: Final answer
    x = 185,096.44

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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.