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Finding the Fourth Proportional to 302,775.75, 417,830.55 and 168,639.75

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Solution

The fourth proportional to 302,775.75, 417,830.55 and 168,639.75 is: 232,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,775.75 : 417,830.55 = 168,639.75 : x
  2. Step 2: Convert to fraction form
    302,775.75/417,830.55 = 168,639.75/x
  3. Step 3: Cross multiply
    302,775.75x = 417,830.55 × 168,639.75
  4. Step 4: Simplify right side
    302,775.75x = 70,462,839,494.36
  5. Step 5: Solve for x
    x = 70,462,839,494.36/302,775.75
  6. Step 6: Final answer
    x = 232,722.86

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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.