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Finding the Fourth Proportional to 257,605, 355,427.62 and 148,682.68

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Solution

The fourth proportional to 257,605, 355,427.62 and 148,682.68 is: 205,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,605 : 355,427.62 = 148,682.68 : x
  2. Step 2: Convert to fraction form
    257,605/355,427.62 = 148,682.68/x
  3. Step 3: Cross multiply
    257,605x = 355,427.62 × 148,682.68
  4. Step 4: Simplify right side
    257,605x = 52,845,931,087.62
  5. Step 5: Solve for x
    x = 52,845,931,087.62/257,605
  6. Step 6: Final answer
    x = 205,143.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.