Home / 257,528.24-386,340.80-103,665.98

Finding the Fourth Proportional to 257,528.24, 386,340.80 and 103,665.98

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Solution

The fourth proportional to 257,528.24, 386,340.80 and 103,665.98 is: 155,518.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,528.24 : 386,340.80 = 103,665.98 : x
  2. Step 2: Convert to fraction form
    257,528.24/386,340.80 = 103,665.98/x
  3. Step 3: Cross multiply
    257,528.24x = 386,340.80 × 103,665.98
  4. Step 4: Simplify right side
    257,528.24x = 40,050,397,645.98
  5. Step 5: Solve for x
    x = 40,050,397,645.98/257,528.24
  6. Step 6: Final answer
    x = 155,518.47

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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.