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Finding the Fourth Proportional to 286,635.79, 394,653.90 and 260,063.74

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Solution

The fourth proportional to 286,635.79, 394,653.90 and 260,063.74 is: 358,068.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,635.79 : 394,653.90 = 260,063.74 : x
  2. Step 2: Convert to fraction form
    286,635.79/394,653.90 = 260,063.74/x
  3. Step 3: Cross multiply
    286,635.79x = 394,653.90 × 260,063.74
  4. Step 4: Simplify right side
    286,635.79x = 102,635,169,239.59
  5. Step 5: Solve for x
    x = 102,635,169,239.59/286,635.79
  6. Step 6: Final answer
    x = 358,068.23

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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.