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Finding the Fourth Proportional to 480,408, 720,612 and 130,200

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Solution

The fourth proportional to 480,408, 720,612 and 130,200 is: 195,300

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,408 : 720,612 = 130,200 : x
  2. Step 2: Convert to fraction form
    480,408/720,612 = 130,200/x
  3. Step 3: Cross multiply
    480,408x = 720,612 × 130,200
  4. Step 4: Simplify right side
    480,408x = 93,823,682,400
  5. Step 5: Solve for x
    x = 93,823,682,400/480,408
  6. Step 6: Final answer
    x = 195,300

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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.