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Finding the Fourth Proportional to 487,665.12, 731,559.95 and 188,231.33

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Solution

The fourth proportional to 487,665.12, 731,559.95 and 188,231.33 is: 282,371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,665.12 : 731,559.95 = 188,231.33 : x
  2. Step 2: Convert to fraction form
    487,665.12/731,559.95 = 188,231.33/x
  3. Step 3: Cross multiply
    487,665.12x = 731,559.95 × 188,231.33
  4. Step 4: Simplify right side
    487,665.12x = 137,702,502,363.23
  5. Step 5: Solve for x
    x = 137,702,502,363.23/487,665.12
  6. Step 6: Final answer
    x = 282,371.03

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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.