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Finding the Fourth Proportional to 213,584.40, 320,157.90 and 124,792.20

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Solution

The fourth proportional to 213,584.40, 320,157.90 and 124,792.20 is: 187,060.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,584.40 : 320,157.90 = 124,792.20 : x
  2. Step 2: Convert to fraction form
    213,584.40/320,157.90 = 124,792.20/x
  3. Step 3: Cross multiply
    213,584.40x = 320,157.90 × 124,792.20
  4. Step 4: Simplify right side
    213,584.40x = 39,953,208,688.38
  5. Step 5: Solve for x
    x = 39,953,208,688.38/213,584.40
  6. Step 6: Final answer
    x = 187,060.52

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1.5x scale

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.