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Finding the Fourth Proportional to 561,838.84, 775,332.30 and 307,187.32

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Solution

The fourth proportional to 561,838.84, 775,332.30 and 307,187.32 is: 423,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,838.84 : 775,332.30 = 307,187.32 : x
  2. Step 2: Convert to fraction form
    561,838.84/775,332.30 = 307,187.32/x
  3. Step 3: Cross multiply
    561,838.84x = 775,332.30 × 307,187.32
  4. Step 4: Simplify right side
    561,838.84x = 238,172,251,346.44
  5. Step 5: Solve for x
    x = 238,172,251,346.44/561,838.84
  6. Step 6: Final answer
    x = 423,915.60

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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.