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Finding the Fourth Proportional to 504,015.75, 756,038.21 and 130,038.75

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Solution

The fourth proportional to 504,015.75, 756,038.21 and 130,038.75 is: 195,061.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,015.75 : 756,038.21 = 130,038.75 : x
  2. Step 2: Convert to fraction form
    504,015.75/756,038.21 = 130,038.75/x
  3. Step 3: Cross multiply
    504,015.75x = 756,038.21 × 130,038.75
  4. Step 4: Simplify right side
    504,015.75x = 98,314,263,130.44
  5. Step 5: Solve for x
    x = 98,314,263,130.44/504,015.75
  6. Step 6: Final answer
    x = 195,061.89

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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.