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Finding the Fourth Proportional to 245,307.32, 368,103.75 and 103,142.30

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Solution

The fourth proportional to 245,307.32, 368,103.75 and 103,142.30 is: 154,773.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,307.32 : 368,103.75 = 103,142.30 : x
  2. Step 2: Convert to fraction form
    245,307.32/368,103.75 = 103,142.30/x
  3. Step 3: Cross multiply
    245,307.32x = 368,103.75 × 103,142.30
  4. Step 4: Simplify right side
    245,307.32x = 37,967,066,221.61
  5. Step 5: Solve for x
    x = 37,967,066,221.61/245,307.32
  6. Step 6: Final answer
    x = 154,773.47

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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.