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Finding the Fourth Proportional to 478,955.36, 718,435.88 and 141,998.95

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Solution

The fourth proportional to 478,955.36, 718,435.88 and 141,998.95 is: 212,999.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,955.36 : 718,435.88 = 141,998.95 : x
  2. Step 2: Convert to fraction form
    478,955.36/718,435.88 = 141,998.95/x
  3. Step 3: Cross multiply
    478,955.36x = 718,435.88 × 141,998.95
  4. Step 4: Simplify right side
    478,955.36x = 102,017,139,892.33
  5. Step 5: Solve for x
    x = 102,017,139,892.33/478,955.36
  6. Step 6: Final answer
    x = 212,999.27

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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.