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Finding the Fourth Proportional to 425,265.20, 637,897.80 and 189,069.20

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Solution

The fourth proportional to 425,265.20, 637,897.80 and 189,069.20 is: 283,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,265.20 : 637,897.80 = 189,069.20 : x
  2. Step 2: Convert to fraction form
    425,265.20/637,897.80 = 189,069.20/x
  3. Step 3: Cross multiply
    425,265.20x = 637,897.80 × 189,069.20
  4. Step 4: Simplify right side
    425,265.20x = 120,606,826,727.76
  5. Step 5: Solve for x
    x = 120,606,826,727.76/425,265.20
  6. Step 6: Final answer
    x = 283,603.80

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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.