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Finding the Fourth Proportional to 638,482.94, 957,909.38 and 189,212.39

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Solution

The fourth proportional to 638,482.94, 957,909.38 and 189,212.39 is: 283,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,482.94 : 957,909.38 = 189,212.39 : x
  2. Step 2: Convert to fraction form
    638,482.94/957,909.38 = 189,212.39/x
  3. Step 3: Cross multiply
    638,482.94x = 957,909.38 × 189,212.39
  4. Step 4: Simplify right side
    638,482.94x = 181,248,317,457.61
  5. Step 5: Solve for x
    x = 181,248,317,457.61/638,482.94
  6. Step 6: Final answer
    x = 283,873.39

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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.