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Finding the Fourth Proportional to 453,081.94, 679,688.52 and 137,539.15

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Solution

The fourth proportional to 453,081.94, 679,688.52 and 137,539.15 is: 206,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,081.94 : 679,688.52 = 137,539.15 : x
  2. Step 2: Convert to fraction form
    453,081.94/679,688.52 = 137,539.15/x
  3. Step 3: Cross multiply
    453,081.94x = 679,688.52 × 137,539.15
  4. Step 4: Simplify right side
    453,081.94x = 93,483,779,090.56
  5. Step 5: Solve for x
    x = 93,483,779,090.56/453,081.94
  6. Step 6: Final answer
    x = 206,328.64

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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.