Home / 213,603.29-320,438.16-71,404.55

Finding the Fourth Proportional to 213,603.29, 320,438.16 and 71,404.55

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Solution

The fourth proportional to 213,603.29, 320,438.16 and 71,404.55 is: 107,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,603.29 : 320,438.16 = 71,404.55 : x
  2. Step 2: Convert to fraction form
    213,603.29/320,438.16 = 71,404.55/x
  3. Step 3: Cross multiply
    213,603.29x = 320,438.16 × 71,404.55
  4. Step 4: Simplify right side
    213,603.29x = 22,880,742,617.63
  5. Step 5: Solve for x
    x = 22,880,742,617.63/213,603.29
  6. Step 6: Final answer
    x = 107,117.93

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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.