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Finding the Fourth Proportional to 209,342.57, 288,886.57 and 118,706.81

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Solution

The fourth proportional to 209,342.57, 288,886.57 and 118,706.81 is: 163,811.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,342.57 : 288,886.57 = 118,706.81 : x
  2. Step 2: Convert to fraction form
    209,342.57/288,886.57 = 118,706.81/x
  3. Step 3: Cross multiply
    209,342.57x = 288,886.57 × 118,706.81
  4. Step 4: Simplify right side
    209,342.57x = 34,292,801,435.34
  5. Step 5: Solve for x
    x = 34,292,801,435.34/209,342.57
  6. Step 6: Final answer
    x = 163,811.89

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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.