Home / 438,417,168.78-605,015,642.76-262,205,135.88

Finding the Fourth Proportional to 438,417,168.78, 605,015,642.76 and 262,205,135.88

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Solution

The fourth proportional to 438,417,168.78, 605,015,642.76 and 262,205,135.88 is: 361,843,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,417,168.78 : 605,015,642.76 = 262,205,135.88 : x
  2. Step 2: Convert to fraction form
    438,417,168.78/605,015,642.76 = 262,205,135.88/x
  3. Step 3: Cross multiply
    438,417,168.78x = 605,015,642.76 × 262,205,135.88
  4. Step 4: Simplify right side
    438,417,168.78x = 158,638,208,819,411,328
  5. Step 5: Solve for x
    x = 158,638,208,819,411,328/438,417,168.78
  6. Step 6: Final answer
    x = 361,843,057.52

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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.