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Finding the Fourth Proportional to 281,098.80, 421,648.20 and 141,130.80

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Solution

The fourth proportional to 281,098.80, 421,648.20 and 141,130.80 is: 211,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,098.80 : 421,648.20 = 141,130.80 : x
  2. Step 2: Convert to fraction form
    281,098.80/421,648.20 = 141,130.80/x
  3. Step 3: Cross multiply
    281,098.80x = 421,648.20 × 141,130.80
  4. Step 4: Simplify right side
    281,098.80x = 59,507,547,784.56
  5. Step 5: Solve for x
    x = 59,507,547,784.56/281,098.80
  6. Step 6: Final answer
    x = 211,696.20

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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.