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Finding the Fourth Proportional to 201,124.90, 301,428.15 and 154,144.90

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Solution

The fourth proportional to 201,124.90, 301,428.15 and 154,144.90 is: 231,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,124.90 : 301,428.15 = 154,144.90 : x
  2. Step 2: Convert to fraction form
    201,124.90/301,428.15 = 154,144.90/x
  3. Step 3: Cross multiply
    201,124.90x = 301,428.15 × 154,144.90
  4. Step 4: Simplify right side
    201,124.90x = 46,463,612,038.94
  5. Step 5: Solve for x
    x = 46,463,612,038.94/201,124.90
  6. Step 6: Final answer
    x = 231,018.70

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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.