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Finding the Fourth Proportional to 251,693.61, 347,259 and 142,779.99

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Solution

The fourth proportional to 251,693.61, 347,259 and 142,779.99 is: 196,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,693.61 : 347,259 = 142,779.99 : x
  2. Step 2: Convert to fraction form
    251,693.61/347,259 = 142,779.99/x
  3. Step 3: Cross multiply
    251,693.61x = 347,259 × 142,779.99
  4. Step 4: Simplify right side
    251,693.61x = 49,581,636,547.41
  5. Step 5: Solve for x
    x = 49,581,636,547.41/251,693.61
  6. Step 6: Final answer
    x = 196,992.04

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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.