Home / 256,579,655.18-384,905,257.26-79,331,268.32

Finding the Fourth Proportional to 256,579,655.18, 384,905,257.26 and 79,331,268.32

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Solution

The fourth proportional to 256,579,655.18, 384,905,257.26 and 79,331,268.32 is: 119,007,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,579,655.18 : 384,905,257.26 = 79,331,268.32 : x
  2. Step 2: Convert to fraction form
    256,579,655.18/384,905,257.26 = 79,331,268.32/x
  3. Step 3: Cross multiply
    256,579,655.18x = 384,905,257.26 × 79,331,268.32
  4. Step 4: Simplify right side
    256,579,655.18x = 30,535,022,241,471,684
  5. Step 5: Solve for x
    x = 30,535,022,241,471,684/256,579,655.18
  6. Step 6: Final answer
    x = 119,007,963.51

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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.