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Finding the Fourth Proportional to 345,448.67, 518,172.98 and 134,938.98

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Solution

The fourth proportional to 345,448.67, 518,172.98 and 134,938.98 is: 202,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,448.67 : 518,172.98 = 134,938.98 : x
  2. Step 2: Convert to fraction form
    345,448.67/518,172.98 = 134,938.98/x
  3. Step 3: Cross multiply
    345,448.67x = 518,172.98 × 134,938.98
  4. Step 4: Simplify right side
    345,448.67x = 69,921,732,710.07
  5. Step 5: Solve for x
    x = 69,921,732,710.07/345,448.67
  6. Step 6: Final answer
    x = 202,408.46

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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.