Home / 208,590,280.80-312,885,421.20-130,992,021.60

Finding the Fourth Proportional to 208,590,280.80, 312,885,421.20 and 130,992,021.60

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Solution

The fourth proportional to 208,590,280.80, 312,885,421.20 and 130,992,021.60 is: 196,488,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,590,280.80 : 312,885,421.20 = 130,992,021.60 : x
  2. Step 2: Convert to fraction form
    208,590,280.80/312,885,421.20 = 130,992,021.60/x
  3. Step 3: Cross multiply
    208,590,280.80x = 312,885,421.20 × 130,992,021.60
  4. Step 4: Simplify right side
    208,590,280.80x = 40,985,493,852,155,496
  5. Step 5: Solve for x
    x = 40,985,493,852,155,496/208,590,280.80
  6. Step 6: Final answer
    x = 196,488,032.40

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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.