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Finding the Fourth Proportional to 392,152.60, 587,354.10 and 303,117.40

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Solution

The fourth proportional to 392,152.60, 587,354.10 and 303,117.40 is: 453,999.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,152.60 : 587,354.10 = 303,117.40 : x
  2. Step 2: Convert to fraction form
    392,152.60/587,354.10 = 303,117.40/x
  3. Step 3: Cross multiply
    392,152.60x = 587,354.10 × 303,117.40
  4. Step 4: Simplify right side
    392,152.60x = 178,037,247,671.34
  5. Step 5: Solve for x
    x = 178,037,247,671.34/392,152.60
  6. Step 6: Final answer
    x = 453,999.92

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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.