Home / 420,228.90-629,968.79-153,927.07

Finding the Fourth Proportional to 420,228.90, 629,968.79 and 153,927.07

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Solution

The fourth proportional to 420,228.90, 629,968.79 and 153,927.07 is: 230,753.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,228.90 : 629,968.79 = 153,927.07 : x
  2. Step 2: Convert to fraction form
    420,228.90/629,968.79 = 153,927.07/x
  3. Step 3: Cross multiply
    420,228.90x = 629,968.79 × 153,927.07
  4. Step 4: Simplify right side
    420,228.90x = 96,969,248,846.04
  5. Step 5: Solve for x
    x = 96,969,248,846.04/420,228.90
  6. Step 6: Final answer
    x = 230,753.40

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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.