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Finding the Fourth Proportional to 261,608.52, 361,088.79 and 154,250.07

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Solution

The fourth proportional to 261,608.52, 361,088.79 and 154,250.07 is: 212,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,608.52 : 361,088.79 = 154,250.07 : x
  2. Step 2: Convert to fraction form
    261,608.52/361,088.79 = 154,250.07/x
  3. Step 3: Cross multiply
    261,608.52x = 361,088.79 × 154,250.07
  4. Step 4: Simplify right side
    261,608.52x = 55,697,971,133.72
  5. Step 5: Solve for x
    x = 55,697,971,133.72/261,608.52
  6. Step 6: Final answer
    x = 212,905.80

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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.