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Finding the Fourth Proportional to 358,968.90, 538,349.64 and 122,306.34

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Solution

The fourth proportional to 358,968.90, 538,349.64 and 122,306.34 is: 183,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,968.90 : 538,349.64 = 122,306.34 : x
  2. Step 2: Convert to fraction form
    358,968.90/538,349.64 = 122,306.34/x
  3. Step 3: Cross multiply
    358,968.90x = 538,349.64 × 122,306.34
  4. Step 4: Simplify right side
    358,968.90x = 65,843,574,108.72
  5. Step 5: Solve for x
    x = 65,843,574,108.72/358,968.90
  6. Step 6: Final answer
    x = 183,424.17

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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.