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Finding the Fourth Proportional to 289,096.05, 433,459.08 and 139,037.48

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Solution

The fourth proportional to 289,096.05, 433,459.08 and 139,037.48 is: 208,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,096.05 : 433,459.08 = 139,037.48 : x
  2. Step 2: Convert to fraction form
    289,096.05/433,459.08 = 139,037.48/x
  3. Step 3: Cross multiply
    289,096.05x = 433,459.08 × 139,037.48
  4. Step 4: Simplify right side
    289,096.05x = 60,267,055,999.02
  5. Step 5: Solve for x
    x = 60,267,055,999.02/289,096.05
  6. Step 6: Final answer
    x = 208,467.24

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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.