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Finding the Fourth Proportional to 219,391, 302,759.58 and 118,789

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Solution

The fourth proportional to 219,391, 302,759.58 and 118,789 is: 163,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,391 : 302,759.58 = 118,789 : x
  2. Step 2: Convert to fraction form
    219,391/302,759.58 = 118,789/x
  3. Step 3: Cross multiply
    219,391x = 302,759.58 × 118,789
  4. Step 4: Simplify right side
    219,391x = 35,964,507,748.62
  5. Step 5: Solve for x
    x = 35,964,507,748.62/219,391
  6. Step 6: Final answer
    x = 163,928.82

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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.