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Finding the Fourth Proportional to 501,505.79, 752,256.06 and 122,428.53

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Solution

The fourth proportional to 501,505.79, 752,256.06 and 122,428.53 is: 183,642.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,505.79 : 752,256.06 = 122,428.53 : x
  2. Step 2: Convert to fraction form
    501,505.79/752,256.06 = 122,428.53/x
  3. Step 3: Cross multiply
    501,505.79x = 752,256.06 × 122,428.53
  4. Step 4: Simplify right side
    501,505.79x = 92,097,603,609.39
  5. Step 5: Solve for x
    x = 92,097,603,609.39/501,505.79
  6. Step 6: Final answer
    x = 183,642.16

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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.