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Finding the Fourth Proportional to 201,369.90, 277,860.06 and 115,315.50

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Solution

The fourth proportional to 201,369.90, 277,860.06 and 115,315.50 is: 159,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,369.90 : 277,860.06 = 115,315.50 : x
  2. Step 2: Convert to fraction form
    201,369.90/277,860.06 = 115,315.50/x
  3. Step 3: Cross multiply
    201,369.90x = 277,860.06 × 115,315.50
  4. Step 4: Simplify right side
    201,369.90x = 32,041,571,748.93
  5. Step 5: Solve for x
    x = 32,041,571,748.93/201,369.90
  6. Step 6: Final answer
    x = 159,117.98

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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.