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Finding the Fourth Proportional to 608,155.74, 839,388.15 and 353,653.74

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Solution

The fourth proportional to 608,155.74, 839,388.15 and 353,653.74 is: 488,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,155.74 : 839,388.15 = 353,653.74 : x
  2. Step 2: Convert to fraction form
    608,155.74/839,388.15 = 353,653.74/x
  3. Step 3: Cross multiply
    608,155.74x = 839,388.15 × 353,653.74
  4. Step 4: Simplify right side
    608,155.74x = 296,852,758,559.18
  5. Step 5: Solve for x
    x = 296,852,758,559.18/608,155.74
  6. Step 6: Final answer
    x = 488,119.64

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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.