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Finding the Fourth Proportional to 404,742.75, 607,143.60 and 155,424.75

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Solution

The fourth proportional to 404,742.75, 607,143.60 and 155,424.75 is: 233,148.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,742.75 : 607,143.60 = 155,424.75 : x
  2. Step 2: Convert to fraction form
    404,742.75/607,143.60 = 155,424.75/x
  3. Step 3: Cross multiply
    404,742.75x = 607,143.60 × 155,424.75
  4. Step 4: Simplify right side
    404,742.75x = 94,365,142,244.10
  5. Step 5: Solve for x
    x = 94,365,142,244.10/404,742.75
  6. Step 6: Final answer
    x = 233,148.44

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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.