Home / 345,358,231.20-517,365,500.40-208,637,488.80

Finding the Fourth Proportional to 345,358,231.20, 517,365,500.40 and 208,637,488.80

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Solution

The fourth proportional to 345,358,231.20, 517,365,500.40 and 208,637,488.80 is: 312,550,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,358,231.20 : 517,365,500.40 = 208,637,488.80 : x
  2. Step 2: Convert to fraction form
    345,358,231.20/517,365,500.40 = 208,637,488.80/x
  3. Step 3: Cross multiply
    345,358,231.20x = 517,365,500.40 × 208,637,488.80
  4. Step 4: Simplify right side
    345,358,231.20x = 107,941,838,795,211,392
  5. Step 5: Solve for x
    x = 107,941,838,795,211,392/345,358,231.20
  6. Step 6: Final answer
    x = 312,550,357.99

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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.