Home / 391,854,360.32-540,637,278.08-222,280,650.59

Finding the Fourth Proportional to 391,854,360.32, 540,637,278.08 and 222,280,650.59

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Solution

The fourth proportional to 391,854,360.32, 540,637,278.08 and 222,280,650.59 is: 306,678,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,854,360.32 : 540,637,278.08 = 222,280,650.59 : x
  2. Step 2: Convert to fraction form
    391,854,360.32/540,637,278.08 = 222,280,650.59/x
  3. Step 3: Cross multiply
    391,854,360.32x = 540,637,278.08 × 222,280,650.59
  4. Step 4: Simplify right side
    391,854,360.32x = 120,173,205,901,014,576
  5. Step 5: Solve for x
    x = 120,173,205,901,014,576/391,854,360.32
  6. Step 6: Final answer
    x = 306,678,240.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.