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Finding the Fourth Proportional to 312,494.40, 468,603.36 and 90,895.68

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Solution

The fourth proportional to 312,494.40, 468,603.36 and 90,895.68 is: 136,303.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,494.40 : 468,603.36 = 90,895.68 : x
  2. Step 2: Convert to fraction form
    312,494.40/468,603.36 = 90,895.68/x
  3. Step 3: Cross multiply
    312,494.40x = 468,603.36 × 90,895.68
  4. Step 4: Simplify right side
    312,494.40x = 42,594,021,057.48
  5. Step 5: Solve for x
    x = 42,594,021,057.48/312,494.40
  6. Step 6: Final answer
    x = 136,303.31

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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.