Home / 258,734,145.60-388,101,218.40-212,817,643.20

Finding the Fourth Proportional to 258,734,145.60, 388,101,218.40 and 212,817,643.20

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Solution

The fourth proportional to 258,734,145.60, 388,101,218.40 and 212,817,643.20 is: 319,226,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,734,145.60 : 388,101,218.40 = 212,817,643.20 : x
  2. Step 2: Convert to fraction form
    258,734,145.60/388,101,218.40 = 212,817,643.20/x
  3. Step 3: Cross multiply
    258,734,145.60x = 388,101,218.40 × 212,817,643.20
  4. Step 4: Simplify right side
    258,734,145.60x = 82,594,786,622,936,464
  5. Step 5: Solve for x
    x = 82,594,786,622,936,464/258,734,145.60
  6. Step 6: Final answer
    x = 319,226,464.80

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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.