Home / 317,928.46-438,440.05-208,840.90

Finding the Fourth Proportional to 317,928.46, 438,440.05 and 208,840.90

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Solution

The fourth proportional to 317,928.46, 438,440.05 and 208,840.90 is: 288,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,928.46 : 438,440.05 = 208,840.90 : x
  2. Step 2: Convert to fraction form
    317,928.46/438,440.05 = 208,840.90/x
  3. Step 3: Cross multiply
    317,928.46x = 438,440.05 × 208,840.90
  4. Step 4: Simplify right side
    317,928.46x = 91,564,214,638.05
  5. Step 5: Solve for x
    x = 91,564,214,638.05/317,928.46
  6. Step 6: Final answer
    x = 288,002.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.