Home / 391,854,359.81-540,637,277.39-222,280,650.08

Finding the Fourth Proportional to 391,854,359.81, 540,637,277.39 and 222,280,650.08

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Solution

The fourth proportional to 391,854,359.81, 540,637,277.39 and 222,280,650.08 is: 306,678,240.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,854,359.81 : 540,637,277.39 = 222,280,650.08 : x
  2. Step 2: Convert to fraction form
    391,854,359.81/540,637,277.39 = 222,280,650.08/x
  3. Step 3: Cross multiply
    391,854,359.81x = 540,637,277.39 × 222,280,650.08
  4. Step 4: Simplify right side
    391,854,359.81x = 120,173,205,475,970,672
  5. Step 5: Solve for x
    x = 120,173,205,475,970,672/391,854,359.81
  6. Step 6: Final answer
    x = 306,678,240.18

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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.