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Finding the Fourth Proportional to 459,363.04, 689,136.53 and 257,246.57

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Solution

The fourth proportional to 459,363.04, 689,136.53 and 257,246.57 is: 385,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,363.04 : 689,136.53 = 257,246.57 : x
  2. Step 2: Convert to fraction form
    459,363.04/689,136.53 = 257,246.57/x
  3. Step 3: Cross multiply
    459,363.04x = 689,136.53 × 257,246.57
  4. Step 4: Simplify right side
    459,363.04x = 177,278,008,604.20
  5. Step 5: Solve for x
    x = 177,278,008,604.20/459,363.04
  6. Step 6: Final answer
    x = 385,921.36

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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.