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Finding the Fourth Proportional to 349,878.04, 525,071.94 and 139,576.12

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Solution

The fourth proportional to 349,878.04, 525,071.94 and 139,576.12 is: 209,465.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,878.04 : 525,071.94 = 139,576.12 : x
  2. Step 2: Convert to fraction form
    349,878.04/525,071.94 = 139,576.12/x
  3. Step 3: Cross multiply
    349,878.04x = 525,071.94 × 139,576.12
  4. Step 4: Simplify right side
    349,878.04x = 73,287,504,106.07
  5. Step 5: Solve for x
    x = 73,287,504,106.07/349,878.04
  6. Step 6: Final answer
    x = 209,465.86

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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.