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Finding the Fourth Proportional to 303,495.10, 455,242.65 and 277,907.20

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Solution

The fourth proportional to 303,495.10, 455,242.65 and 277,907.20 is: 416,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,495.10 : 455,242.65 = 277,907.20 : x
  2. Step 2: Convert to fraction form
    303,495.10/455,242.65 = 277,907.20/x
  3. Step 3: Cross multiply
    303,495.10x = 455,242.65 × 277,907.20
  4. Step 4: Simplify right side
    303,495.10x = 126,515,210,182.08
  5. Step 5: Solve for x
    x = 126,515,210,182.08/303,495.10
  6. Step 6: Final answer
    x = 416,860.80

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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.