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Finding the Fourth Proportional to 257,597.24, 386,391.60 and 70,608.74

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Solution

The fourth proportional to 257,597.24, 386,391.60 and 70,608.74 is: 105,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,597.24 : 386,391.60 = 70,608.74 : x
  2. Step 2: Convert to fraction form
    257,597.24/386,391.60 = 70,608.74/x
  3. Step 3: Cross multiply
    257,597.24x = 386,391.60 × 70,608.74
  4. Step 4: Simplify right side
    257,597.24x = 27,282,622,090.63
  5. Step 5: Solve for x
    x = 27,282,622,090.63/257,597.24
  6. Step 6: Final answer
    x = 105,911.94

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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.