Home / 354,109,745.20-531,164,617.80-256,608,036.40

Finding the Fourth Proportional to 354,109,745.20, 531,164,617.80 and 256,608,036.40

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Solution

The fourth proportional to 354,109,745.20, 531,164,617.80 and 256,608,036.40 is: 384,912,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,109,745.20 : 531,164,617.80 = 256,608,036.40 : x
  2. Step 2: Convert to fraction form
    354,109,745.20/531,164,617.80 = 256,608,036.40/x
  3. Step 3: Cross multiply
    354,109,745.20x = 531,164,617.80 × 256,608,036.40
  4. Step 4: Simplify right side
    354,109,745.20x = 136,301,109,578,814,496
  5. Step 5: Solve for x
    x = 136,301,109,578,814,496/354,109,745.20
  6. Step 6: Final answer
    x = 384,912,054.60

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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.