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Finding the Fourth Proportional to 253,726.76, 350,138.34 and 139,007.67

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Solution

The fourth proportional to 253,726.76, 350,138.34 and 139,007.67 is: 191,828.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,726.76 : 350,138.34 = 139,007.67 : x
  2. Step 2: Convert to fraction form
    253,726.76/350,138.34 = 139,007.67/x
  3. Step 3: Cross multiply
    253,726.76x = 350,138.34 × 139,007.67
  4. Step 4: Simplify right side
    253,726.76x = 48,671,914,821.07
  5. Step 5: Solve for x
    x = 48,671,914,821.07/253,726.76
  6. Step 6: Final answer
    x = 191,828.07

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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.