Home / 258,740,015.60-388,110,023.40-255,338,793.20

Finding the Fourth Proportional to 258,740,015.60, 388,110,023.40 and 255,338,793.20

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Solution

The fourth proportional to 258,740,015.60, 388,110,023.40 and 255,338,793.20 is: 383,008,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,740,015.60 : 388,110,023.40 = 255,338,793.20 : x
  2. Step 2: Convert to fraction form
    258,740,015.60/388,110,023.40 = 255,338,793.20/x
  3. Step 3: Cross multiply
    258,740,015.60x = 388,110,023.40 × 255,338,793.20
  4. Step 4: Simplify right side
    258,740,015.60x = 99,099,545,003,779,744
  5. Step 5: Solve for x
    x = 99,099,545,003,779,744/258,740,015.60
  6. Step 6: Final answer
    x = 383,008,189.80

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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.