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Finding the Fourth Proportional to 368,378.39, 552,567.61 and 102,138.91

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Solution

The fourth proportional to 368,378.39, 552,567.61 and 102,138.91 is: 153,208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,378.39 : 552,567.61 = 102,138.91 : x
  2. Step 2: Convert to fraction form
    368,378.39/552,567.61 = 102,138.91/x
  3. Step 3: Cross multiply
    368,378.39x = 552,567.61 × 102,138.91
  4. Step 4: Simplify right side
    368,378.39x = 56,438,653,386.71
  5. Step 5: Solve for x
    x = 56,438,653,386.71/368,378.39
  6. Step 6: Final answer
    x = 153,208.37

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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.