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Finding the Fourth Proportional to 452,386.98, 678,603.83 and 115,430.58

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Solution

The fourth proportional to 452,386.98, 678,603.83 and 115,430.58 is: 173,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,386.98 : 678,603.83 = 115,430.58 : x
  2. Step 2: Convert to fraction form
    452,386.98/678,603.83 = 115,430.58/x
  3. Step 3: Cross multiply
    452,386.98x = 678,603.83 × 115,430.58
  4. Step 4: Simplify right side
    452,386.98x = 78,331,633,109.97
  5. Step 5: Solve for x
    x = 78,331,633,109.97/452,386.98
  6. Step 6: Final answer
    x = 173,151.83

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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.