Home / 256,634,812.48-384,798,488.42-81,682,276.22

Finding the Fourth Proportional to 256,634,812.48, 384,798,488.42 and 81,682,276.22

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Solution

The fourth proportional to 256,634,812.48, 384,798,488.42 and 81,682,276.22 is: 122,474,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,634,812.48 : 384,798,488.42 = 81,682,276.22 : x
  2. Step 2: Convert to fraction form
    256,634,812.48/384,798,488.42 = 81,682,276.22/x
  3. Step 3: Cross multiply
    256,634,812.48x = 384,798,488.42 × 81,682,276.22
  4. Step 4: Simplify right side
    256,634,812.48x = 31,431,216,420,160,912
  5. Step 5: Solve for x
    x = 31,431,216,420,160,912/256,634,812.48
  6. Step 6: Final answer
    x = 122,474,484.72

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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.