Home / 315,258.20-472,109.70-209,504.60

Finding the Fourth Proportional to 315,258.20, 472,109.70 and 209,504.60

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Solution

The fourth proportional to 315,258.20, 472,109.70 and 209,504.60 is: 313,740.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,258.20 : 472,109.70 = 209,504.60 : x
  2. Step 2: Convert to fraction form
    315,258.20/472,109.70 = 209,504.60/x
  3. Step 3: Cross multiply
    315,258.20x = 472,109.70 × 209,504.60
  4. Step 4: Simplify right side
    315,258.20x = 98,909,153,854.62
  5. Step 5: Solve for x
    x = 98,909,153,854.62/315,258.20
  6. Step 6: Final answer
    x = 313,740.15

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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.