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Finding the Fourth Proportional to 488,808.60, 733,212.90 and 208,289.40

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Solution

The fourth proportional to 488,808.60, 733,212.90 and 208,289.40 is: 312,434.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,808.60 : 733,212.90 = 208,289.40 : x
  2. Step 2: Convert to fraction form
    488,808.60/733,212.90 = 208,289.40/x
  3. Step 3: Cross multiply
    488,808.60x = 733,212.90 × 208,289.40
  4. Step 4: Simplify right side
    488,808.60x = 152,720,475,013.26
  5. Step 5: Solve for x
    x = 152,720,475,013.26/488,808.60
  6. Step 6: Final answer
    x = 312,434.10

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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.