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Finding the Fourth Proportional to 207,843.60, 310,986.90 and 148,010.40

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Solution

The fourth proportional to 207,843.60, 310,986.90 and 148,010.40 is: 221,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,843.60 : 310,986.90 = 148,010.40 : x
  2. Step 2: Convert to fraction form
    207,843.60/310,986.90 = 148,010.40/x
  3. Step 3: Cross multiply
    207,843.60x = 310,986.90 × 148,010.40
  4. Step 4: Simplify right side
    207,843.60x = 46,029,295,463.76
  5. Step 5: Solve for x
    x = 46,029,295,463.76/207,843.60
  6. Step 6: Final answer
    x = 221,461.21

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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.