Home / 257,870.23-386,762.90-68,342.38

Finding the Fourth Proportional to 257,870.23, 386,762.90 and 68,342.38

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Solution

The fourth proportional to 257,870.23, 386,762.90 and 68,342.38 is: 102,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,870.23 : 386,762.90 = 68,342.38 : x
  2. Step 2: Convert to fraction form
    257,870.23/386,762.90 = 68,342.38/x
  3. Step 3: Cross multiply
    257,870.23x = 386,762.90 × 68,342.38
  4. Step 4: Simplify right side
    257,870.23x = 26,432,298,333.05
  5. Step 5: Solve for x
    x = 26,432,298,333.05/257,870.23
  6. Step 6: Final answer
    x = 102,502.32

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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.