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Finding the Fourth Proportional to 358,447.80, 537,671.70 and 319,740.60

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Solution

The fourth proportional to 358,447.80, 537,671.70 and 319,740.60 is: 479,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,447.80 : 537,671.70 = 319,740.60 : x
  2. Step 2: Convert to fraction form
    358,447.80/537,671.70 = 319,740.60/x
  3. Step 3: Cross multiply
    358,447.80x = 537,671.70 × 319,740.60
  4. Step 4: Simplify right side
    358,447.80x = 171,915,471,961.02
  5. Step 5: Solve for x
    x = 171,915,471,961.02/358,447.80
  6. Step 6: Final answer
    x = 479,610.90

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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.