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Finding the Fourth Proportional to 366,606,911.80, 549,910,367.70 and 319,255,518.70

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Solution

The fourth proportional to 366,606,911.80, 549,910,367.70 and 319,255,518.70 is: 478,883,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,606,911.80 : 549,910,367.70 = 319,255,518.70 : x
  2. Step 2: Convert to fraction form
    366,606,911.80/549,910,367.70 = 319,255,518.70/x
  3. Step 3: Cross multiply
    366,606,911.80x = 549,910,367.70 × 319,255,518.70
  4. Step 4: Simplify right side
    366,606,911.80x = 175,561,919,678,571,232
  5. Step 5: Solve for x
    x = 175,561,919,678,571,232/366,606,911.80
  6. Step 6: Final answer
    x = 478,883,278.05

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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.