Home / 212,634,140.80-318,951,211.20-210,618,601.60

Finding the Fourth Proportional to 212,634,140.80, 318,951,211.20 and 210,618,601.60

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Solution

The fourth proportional to 212,634,140.80, 318,951,211.20 and 210,618,601.60 is: 315,927,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,634,140.80 : 318,951,211.20 = 210,618,601.60 : x
  2. Step 2: Convert to fraction form
    212,634,140.80/318,951,211.20 = 210,618,601.60/x
  3. Step 3: Cross multiply
    212,634,140.80x = 318,951,211.20 × 210,618,601.60
  4. Step 4: Simplify right side
    212,634,140.80x = 67,177,058,081,570,256
  5. Step 5: Solve for x
    x = 67,177,058,081,570,256/212,634,140.80
  6. Step 6: Final answer
    x = 315,927,902.40

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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.