Home / 257,530.24-386,343.80-103,667.98

Finding the Fourth Proportional to 257,530.24, 386,343.80 and 103,667.98

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Solution

The fourth proportional to 257,530.24, 386,343.80 and 103,667.98 is: 155,521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,530.24 : 386,343.80 = 103,667.98 : x
  2. Step 2: Convert to fraction form
    257,530.24/386,343.80 = 103,667.98/x
  3. Step 3: Cross multiply
    257,530.24x = 386,343.80 × 103,667.98
  4. Step 4: Simplify right side
    257,530.24x = 40,051,481,331.52
  5. Step 5: Solve for x
    x = 40,051,481,331.52/257,530.24
  6. Step 6: Final answer
    x = 155,521.47

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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.