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Finding the Fourth Proportional to 209,466.95, 289,015.21 and 118,802.03

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Solution

The fourth proportional to 209,466.95, 289,015.21 and 118,802.03 is: 163,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,466.95 : 289,015.21 = 118,802.03 : x
  2. Step 2: Convert to fraction form
    209,466.95/289,015.21 = 118,802.03/x
  3. Step 3: Cross multiply
    209,466.95x = 289,015.21 × 118,802.03
  4. Step 4: Simplify right side
    209,466.95x = 34,335,594,074.41
  5. Step 5: Solve for x
    x = 34,335,594,074.41/209,466.95
  6. Step 6: Final answer
    x = 163,918.91

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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.