Home / 217,840.40-326,683.80-77,603.60

Finding the Fourth Proportional to 217,840.40, 326,683.80 and 77,603.60

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Solution

The fourth proportional to 217,840.40, 326,683.80 and 77,603.60 is: 116,378.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,840.40 : 326,683.80 = 77,603.60 : x
  2. Step 2: Convert to fraction form
    217,840.40/326,683.80 = 77,603.60/x
  3. Step 3: Cross multiply
    217,840.40x = 326,683.80 × 77,603.60
  4. Step 4: Simplify right side
    217,840.40x = 25,351,838,941.68
  5. Step 5: Solve for x
    x = 25,351,838,941.68/217,840.40
  6. Step 6: Final answer
    x = 116,378.04

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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.