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Finding the Fourth Proportional to 209,392.68, 289,013.20 and 118,801.64

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Solution

The fourth proportional to 209,392.68, 289,013.20 and 118,801.64 is: 163,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,392.68 : 289,013.20 = 118,801.64 : x
  2. Step 2: Convert to fraction form
    209,392.68/289,013.20 = 118,801.64/x
  3. Step 3: Cross multiply
    209,392.68x = 289,013.20 × 118,801.64
  4. Step 4: Simplify right side
    209,392.68x = 34,335,242,141.65
  5. Step 5: Solve for x
    x = 34,335,242,141.65/209,392.68
  6. Step 6: Final answer
    x = 163,975.37

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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.