Home / 257,261.07-385,685.53-122,257.39

Finding the Fourth Proportional to 257,261.07, 385,685.53 and 122,257.39

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Solution

The fourth proportional to 257,261.07, 385,685.53 and 122,257.39 is: 183,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,261.07 : 385,685.53 = 122,257.39 : x
  2. Step 2: Convert to fraction form
    257,261.07/385,685.53 = 122,257.39/x
  3. Step 3: Cross multiply
    257,261.07x = 385,685.53 × 122,257.39
  4. Step 4: Simplify right side
    257,261.07x = 47,152,904,988.71
  5. Step 5: Solve for x
    x = 47,152,904,988.71/257,261.07
  6. Step 6: Final answer
    x = 183,288.15

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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.