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Finding the Fourth Proportional to 489,901.37, 734,663.12 and 190,342.51

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Solution

The fourth proportional to 489,901.37, 734,663.12 and 190,342.51 is: 285,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,901.37 : 734,663.12 = 190,342.51 : x
  2. Step 2: Convert to fraction form
    489,901.37/734,663.12 = 190,342.51/x
  3. Step 3: Cross multiply
    489,901.37x = 734,663.12 × 190,342.51
  4. Step 4: Simplify right side
    489,901.37x = 139,837,619,476.86
  5. Step 5: Solve for x
    x = 139,837,619,476.86/489,901.37
  6. Step 6: Final answer
    x = 285,440.35

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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.