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Finding the Fourth Proportional to 459,817.60, 690,244.80 and 355,100.80

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Solution

The fourth proportional to 459,817.60, 690,244.80 and 355,100.80 is: 533,051.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,817.60 : 690,244.80 = 355,100.80 : x
  2. Step 2: Convert to fraction form
    459,817.60/690,244.80 = 355,100.80/x
  3. Step 3: Cross multiply
    459,817.60x = 690,244.80 × 355,100.80
  4. Step 4: Simplify right side
    459,817.60x = 245,106,480,675.84
  5. Step 5: Solve for x
    x = 245,106,480,675.84/459,817.60
  6. Step 6: Final answer
    x = 533,051.54

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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.