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Finding the Fourth Proportional to 455,901.72, 629,146.30 and 249,174.28

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Solution

The fourth proportional to 455,901.72, 629,146.30 and 249,174.28 is: 343,861.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,901.72 : 629,146.30 = 249,174.28 : x
  2. Step 2: Convert to fraction form
    455,901.72/629,146.30 = 249,174.28/x
  3. Step 3: Cross multiply
    455,901.72x = 629,146.30 × 249,174.28
  4. Step 4: Simplify right side
    455,901.72x = 156,767,076,317.16
  5. Step 5: Solve for x
    x = 156,767,076,317.16/455,901.72
  6. Step 6: Final answer
    x = 343,861.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.