Home / 355,007,115.37-489,900,421.55-198,375,509.44

Finding the Fourth Proportional to 355,007,115.37, 489,900,421.55 and 198,375,509.44

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Solution

The fourth proportional to 355,007,115.37, 489,900,421.55 and 198,375,509.44 is: 273,752,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,007,115.37 : 489,900,421.55 = 198,375,509.44 : x
  2. Step 2: Convert to fraction form
    355,007,115.37/489,900,421.55 = 198,375,509.44/x
  3. Step 3: Cross multiply
    355,007,115.37x = 489,900,421.55 × 198,375,509.44
  4. Step 4: Simplify right side
    355,007,115.37x = 97,184,245,697,402,512
  5. Step 5: Solve for x
    x = 97,184,245,697,402,512/355,007,115.37
  6. Step 6: Final answer
    x = 273,752,951.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.