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Finding the Fourth Proportional to 218,866.70, 302,035.95 and 118,264.70

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Solution

The fourth proportional to 218,866.70, 302,035.95 and 118,264.70 is: 163,205.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,866.70 : 302,035.95 = 118,264.70 : x
  2. Step 2: Convert to fraction form
    218,866.70/302,035.95 = 118,264.70/x
  3. Step 3: Cross multiply
    218,866.70x = 302,035.95 × 118,264.70
  4. Step 4: Simplify right side
    218,866.70x = 35,720,189,505.79
  5. Step 5: Solve for x
    x = 35,720,189,505.79/218,866.70
  6. Step 6: Final answer
    x = 163,205.23

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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.