Home / 355,038,458.54-489,953,736.59-198,405,565.70

Finding the Fourth Proportional to 355,038,458.54, 489,953,736.59 and 198,405,565.70

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Solution

The fourth proportional to 355,038,458.54, 489,953,736.59 and 198,405,565.70 is: 273,800,051.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,038,458.54 : 489,953,736.59 = 198,405,565.70 : x
  2. Step 2: Convert to fraction form
    355,038,458.54/489,953,736.59 = 198,405,565.70/x
  3. Step 3: Cross multiply
    355,038,458.54x = 489,953,736.59 × 198,405,565.70
  4. Step 4: Simplify right side
    355,038,458.54x = 97,209,548,271,525,936
  5. Step 5: Solve for x
    x = 97,209,548,271,525,936/355,038,458.54
  6. Step 6: Final answer
    x = 273,800,051.61

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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.