Home / 425,317.80-637,976.70-214,928.40

Finding the Fourth Proportional to 425,317.80, 637,976.70 and 214,928.40

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Solution

The fourth proportional to 425,317.80, 637,976.70 and 214,928.40 is: 322,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,317.80 : 637,976.70 = 214,928.40 : x
  2. Step 2: Convert to fraction form
    425,317.80/637,976.70 = 214,928.40/x
  3. Step 3: Cross multiply
    425,317.80x = 637,976.70 × 214,928.40
  4. Step 4: Simplify right side
    425,317.80x = 137,119,311,368.28
  5. Step 5: Solve for x
    x = 137,119,311,368.28/425,317.80
  6. Step 6: Final answer
    x = 322,392.60

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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.