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Finding the Fourth Proportional to 425,012.16, 637,911.54 and 214,797.72

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Solution

The fourth proportional to 425,012.16, 637,911.54 and 214,797.72 is: 322,395.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,012.16 : 637,911.54 = 214,797.72 : x
  2. Step 2: Convert to fraction form
    425,012.16/637,911.54 = 214,797.72/x
  3. Step 3: Cross multiply
    425,012.16x = 637,911.54 × 214,797.72
  4. Step 4: Simplify right side
    425,012.16x = 137,021,944,353.69
  5. Step 5: Solve for x
    x = 137,021,944,353.69/425,012.16
  6. Step 6: Final answer
    x = 322,395.35

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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.