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Finding the Fourth Proportional to 209,612.71, 289,250.95 and 118,970.52

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Solution

The fourth proportional to 209,612.71, 289,250.95 and 118,970.52 is: 164,171.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,612.71 : 289,250.95 = 118,970.52 : x
  2. Step 2: Convert to fraction form
    209,612.71/289,250.95 = 118,970.52/x
  3. Step 3: Cross multiply
    209,612.71x = 289,250.95 × 118,970.52
  4. Step 4: Simplify right side
    209,612.71x = 34,412,336,399.98
  5. Step 5: Solve for x
    x = 34,412,336,399.98/209,612.71
  6. Step 6: Final answer
    x = 164,171.04

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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.