Home / 215,802.48-321,352.56-213,443.76

Finding the Fourth Proportional to 215,802.48, 321,352.56 and 213,443.76

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Solution

The fourth proportional to 215,802.48, 321,352.56 and 213,443.76 is: 317,840.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,802.48 : 321,352.56 = 213,443.76 : x
  2. Step 2: Convert to fraction form
    215,802.48/321,352.56 = 213,443.76/x
  3. Step 3: Cross multiply
    215,802.48x = 321,352.56 × 213,443.76
  4. Step 4: Simplify right side
    215,802.48x = 68,590,698,692.03
  5. Step 5: Solve for x
    x = 68,590,698,692.03/215,802.48
  6. Step 6: Final answer
    x = 317,840.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.