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Finding the Fourth Proportional to 355,638.40, 533,457.60 and 335,363.20

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Solution

The fourth proportional to 355,638.40, 533,457.60 and 335,363.20 is: 503,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,638.40 : 533,457.60 = 335,363.20 : x
  2. Step 2: Convert to fraction form
    355,638.40/533,457.60 = 335,363.20/x
  3. Step 3: Cross multiply
    355,638.40x = 533,457.60 × 335,363.20
  4. Step 4: Simplify right side
    355,638.40x = 178,902,047,800.32
  5. Step 5: Solve for x
    x = 178,902,047,800.32/355,638.40
  6. Step 6: Final answer
    x = 503,044.80

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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.