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Finding the Fourth Proportional to 355,939.60, 533,909.40 and 145,728.40

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Solution

The fourth proportional to 355,939.60, 533,909.40 and 145,728.40 is: 218,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,939.60 : 533,909.40 = 145,728.40 : x
  2. Step 2: Convert to fraction form
    355,939.60/533,909.40 = 145,728.40/x
  3. Step 3: Cross multiply
    355,939.60x = 533,909.40 × 145,728.40
  4. Step 4: Simplify right side
    355,939.60x = 77,805,762,606.96
  5. Step 5: Solve for x
    x = 77,805,762,606.96/355,939.60
  6. Step 6: Final answer
    x = 218,592.60

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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.