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Finding the Fourth Proportional to 355,999.70, 533,999.55 and 343,558.10

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Solution

The fourth proportional to 355,999.70, 533,999.55 and 343,558.10 is: 515,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,999.70 : 533,999.55 = 343,558.10 : x
  2. Step 2: Convert to fraction form
    355,999.70/533,999.55 = 343,558.10/x
  3. Step 3: Cross multiply
    355,999.70x = 533,999.55 × 343,558.10
  4. Step 4: Simplify right side
    355,999.70x = 183,459,870,798.86
  5. Step 5: Solve for x
    x = 183,459,870,798.86/355,999.70
  6. Step 6: Final answer
    x = 515,337.15

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1.5x scale

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.