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Finding the Fourth Proportional to 373,313.60, 559,970.40 and 328,990.40

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Solution

The fourth proportional to 373,313.60, 559,970.40 and 328,990.40 is: 493,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,313.60 : 559,970.40 = 328,990.40 : x
  2. Step 2: Convert to fraction form
    373,313.60/559,970.40 = 328,990.40/x
  3. Step 3: Cross multiply
    373,313.60x = 559,970.40 × 328,990.40
  4. Step 4: Simplify right side
    373,313.60x = 184,224,885,884.16
  5. Step 5: Solve for x
    x = 184,224,885,884.16/373,313.60
  6. Step 6: Final answer
    x = 493,485.60

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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.