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Finding the Fourth Proportional to 455,663.44, 683,495.40 and 118,703.20

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Solution

The fourth proportional to 455,663.44, 683,495.40 and 118,703.20 is: 178,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,663.44 : 683,495.40 = 118,703.20 : x
  2. Step 2: Convert to fraction form
    455,663.44/683,495.40 = 118,703.20/x
  3. Step 3: Cross multiply
    455,663.44x = 683,495.40 × 118,703.20
  4. Step 4: Simplify right side
    455,663.44x = 81,133,091,165.28
  5. Step 5: Solve for x
    x = 81,133,091,165.28/455,663.44
  6. Step 6: Final answer
    x = 178,054.86

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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.