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Finding the Fourth Proportional to 561,701.07, 775,143.54 and 307,052.88

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Solution

The fourth proportional to 561,701.07, 775,143.54 and 307,052.88 is: 423,730.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,701.07 : 775,143.54 = 307,052.88 : x
  2. Step 2: Convert to fraction form
    561,701.07/775,143.54 = 307,052.88/x
  3. Step 3: Cross multiply
    561,701.07x = 775,143.54 × 307,052.88
  4. Step 4: Simplify right side
    561,701.07x = 238,010,056,370.40
  5. Step 5: Solve for x
    x = 238,010,056,370.40/561,701.07
  6. Step 6: Final answer
    x = 423,730.82

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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.