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Finding the Fourth Proportional to 603,139.40, 904,381.05 and 248,189.30

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Solution

The fourth proportional to 603,139.40, 904,381.05 and 248,189.30 is: 372,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,139.40 : 904,381.05 = 248,189.30 : x
  2. Step 2: Convert to fraction form
    603,139.40/904,381.05 = 248,189.30/x
  3. Step 3: Cross multiply
    603,139.40x = 904,381.05 × 248,189.30
  4. Step 4: Simplify right side
    603,139.40x = 224,457,699,732.77
  5. Step 5: Solve for x
    x = 224,457,699,732.77/603,139.40
  6. Step 6: Final answer
    x = 372,148.96

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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.