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Finding the Fourth Proportional to 212,990,601.60, 319,485,902.40 and 190,032,350.40

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Solution

The fourth proportional to 212,990,601.60, 319,485,902.40 and 190,032,350.40 is: 285,048,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,990,601.60 : 319,485,902.40 = 190,032,350.40 : x
  2. Step 2: Convert to fraction form
    212,990,601.60/319,485,902.40 = 190,032,350.40/x
  3. Step 3: Cross multiply
    212,990,601.60x = 319,485,902.40 × 190,032,350.40
  4. Step 4: Simplify right side
    212,990,601.60x = 60,712,656,952,737,000
  5. Step 5: Solve for x
    x = 60,712,656,952,737,000/212,990,601.60
  6. Step 6: Final answer
    x = 285,048,525.60

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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.