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Finding the Fourth Proportional to 316,535.87, 436,749.03 and 187,409.93

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Solution

The fourth proportional to 316,535.87, 436,749.03 and 187,409.93 is: 258,583.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,535.87 : 436,749.03 = 187,409.93 : x
  2. Step 2: Convert to fraction form
    316,535.87/436,749.03 = 187,409.93/x
  3. Step 3: Cross multiply
    316,535.87x = 436,749.03 × 187,409.93
  4. Step 4: Simplify right side
    316,535.87x = 81,851,102,019.07
  5. Step 5: Solve for x
    x = 81,851,102,019.07/316,535.87
  6. Step 6: Final answer
    x = 258,583.97

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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.