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Finding the Fourth Proportional to 603,139.53, 904,070.21 and 283,021.05

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Solution

The fourth proportional to 603,139.53, 904,070.21 and 283,021.05 is: 424,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,139.53 : 904,070.21 = 283,021.05 : x
  2. Step 2: Convert to fraction form
    603,139.53/904,070.21 = 283,021.05/x
  3. Step 3: Cross multiply
    603,139.53x = 904,070.21 × 283,021.05
  4. Step 4: Simplify right side
    603,139.53x = 255,870,898,692.82
  5. Step 5: Solve for x
    x = 255,870,898,692.82/603,139.53
  6. Step 6: Final answer
    x = 424,231.68

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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.