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Finding the Fourth Proportional to 355,487.20, 533,303.70 and 118,999.60

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Solution

The fourth proportional to 355,487.20, 533,303.70 and 118,999.60 is: 178,523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,487.20 : 533,303.70 = 118,999.60 : x
  2. Step 2: Convert to fraction form
    355,487.20/533,303.70 = 118,999.60/x
  3. Step 3: Cross multiply
    355,487.20x = 533,303.70 × 118,999.60
  4. Step 4: Simplify right side
    355,487.20x = 63,462,926,978.52
  5. Step 5: Solve for x
    x = 63,462,926,978.52/355,487.20
  6. Step 6: Final answer
    x = 178,523.80

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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.