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Finding the Fourth Proportional to 808,106, 1,212,165.08 and 358,706.06

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Solution

The fourth proportional to 808,106, 1,212,165.08 and 358,706.06 is: 538,061.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,106 : 1,212,165.08 = 358,706.06 : x
  2. Step 2: Convert to fraction form
    808,106/1,212,165.08 = 358,706.06/x
  3. Step 3: Cross multiply
    808,106x = 1,212,165.08 × 358,706.06
  4. Step 4: Simplify right side
    808,106x = 434,810,959,916.39
  5. Step 5: Solve for x
    x = 434,810,959,916.39/808,106
  6. Step 6: Final answer
    x = 538,061.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.