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Finding the Fourth Proportional to 258,795.92, 357,137.62 and 145,618.68

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Solution

The fourth proportional to 258,795.92, 357,137.62 and 145,618.68 is: 200,953.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,795.92 : 357,137.62 = 145,618.68 : x
  2. Step 2: Convert to fraction form
    258,795.92/357,137.62 = 145,618.68/x
  3. Step 3: Cross multiply
    258,795.92x = 357,137.62 × 145,618.68
  4. Step 4: Simplify right side
    258,795.92x = 52,005,908,802.74
  5. Step 5: Solve for x
    x = 52,005,908,802.74/258,795.92
  6. Step 6: Final answer
    x = 200,953.36

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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.