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Finding the Fourth Proportional to 289,056.30, 403,745.70 and 289,056.30

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Solution

The fourth proportional to 289,056.30, 403,745.70 and 289,056.30 is: 403,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,056.30 : 403,745.70 = 289,056.30 : x
  2. Step 2: Convert to fraction form
    289,056.30/403,745.70 = 289,056.30/x
  3. Step 3: Cross multiply
    289,056.30x = 403,745.70 × 289,056.30
  4. Step 4: Simplify right side
    289,056.30x = 116,705,238,182.91
  5. Step 5: Solve for x
    x = 116,705,238,182.91/289,056.30
  6. Step 6: Final answer
    x = 403,745.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.