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Finding the Fourth Proportional to 455,980.48, 629,255.04 and 249,253.09

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Solution

The fourth proportional to 455,980.48, 629,255.04 and 249,253.09 is: 343,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,980.48 : 629,255.04 = 249,253.09 : x
  2. Step 2: Convert to fraction form
    455,980.48/629,255.04 = 249,253.09/x
  3. Step 3: Cross multiply
    455,980.48x = 629,255.04 × 249,253.09
  4. Step 4: Simplify right side
    455,980.48x = 156,843,763,118.07
  5. Step 5: Solve for x
    x = 156,843,763,118.07/455,980.48
  6. Step 6: Final answer
    x = 343,970.35

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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.