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Finding the Fourth Proportional to 316,362.74, 436,566.58 and 173,128.82

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Solution

The fourth proportional to 316,362.74, 436,566.58 and 173,128.82 is: 238,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,362.74 : 436,566.58 = 173,128.82 : x
  2. Step 2: Convert to fraction form
    316,362.74/436,566.58 = 173,128.82/x
  3. Step 3: Cross multiply
    316,362.74x = 436,566.58 × 173,128.82
  4. Step 4: Simplify right side
    316,362.74x = 75,582,254,231.18
  5. Step 5: Solve for x
    x = 75,582,254,231.18/316,362.74
  6. Step 6: Final answer
    x = 238,910.10

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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.