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Finding the Fourth Proportional to 209,618.40, 314,427.60 and 125,637.60

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Solution

The fourth proportional to 209,618.40, 314,427.60 and 125,637.60 is: 188,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,618.40 : 314,427.60 = 125,637.60 : x
  2. Step 2: Convert to fraction form
    209,618.40/314,427.60 = 125,637.60/x
  3. Step 3: Cross multiply
    209,618.40x = 314,427.60 × 125,637.60
  4. Step 4: Simplify right side
    209,618.40x = 39,503,929,037.76
  5. Step 5: Solve for x
    x = 39,503,929,037.76/209,618.40
  6. Step 6: Final answer
    x = 188,456.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.