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Finding the Fourth Proportional to 219,505.12, 302,918.52 and 118,903.12

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Solution

The fourth proportional to 219,505.12, 302,918.52 and 118,903.12 is: 164,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,505.12 : 302,918.52 = 118,903.12 : x
  2. Step 2: Convert to fraction form
    219,505.12/302,918.52 = 118,903.12/x
  3. Step 3: Cross multiply
    219,505.12x = 302,918.52 × 118,903.12
  4. Step 4: Simplify right side
    219,505.12x = 36,017,957,133.78
  5. Step 5: Solve for x
    x = 36,017,957,133.78/219,505.12
  6. Step 6: Final answer
    x = 164,087.09

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1.5x scale

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.