Home / 315,020,139.40-472,530,209.10-204,055,258.60

Finding the Fourth Proportional to 315,020,139.40, 472,530,209.10 and 204,055,258.60

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Solution

The fourth proportional to 315,020,139.40, 472,530,209.10 and 204,055,258.60 is: 306,082,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,020,139.40 : 472,530,209.10 = 204,055,258.60 : x
  2. Step 2: Convert to fraction form
    315,020,139.40/472,530,209.10 = 204,055,258.60/x
  3. Step 3: Cross multiply
    315,020,139.40x = 472,530,209.10 × 204,055,258.60
  4. Step 4: Simplify right side
    315,020,139.40x = 96,422,274,014,212,576
  5. Step 5: Solve for x
    x = 96,422,274,014,212,576/315,020,139.40
  6. Step 6: Final answer
    x = 306,082,887.90

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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.