Home / 385,364,482.68-531,803,499.50-209,152,478.10

Finding the Fourth Proportional to 385,364,482.68, 531,803,499.50 and 209,152,478.10

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Solution

The fourth proportional to 385,364,482.68, 531,803,499.50 and 209,152,478.10 is: 288,630,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,364,482.68 : 531,803,499.50 = 209,152,478.10 : x
  2. Step 2: Convert to fraction form
    385,364,482.68/531,803,499.50 = 209,152,478.10/x
  3. Step 3: Cross multiply
    385,364,482.68x = 531,803,499.50 × 209,152,478.10
  4. Step 4: Simplify right side
    385,364,482.68x = 111,228,019,782,677,104
  5. Step 5: Solve for x
    x = 111,228,019,782,677,104/385,364,482.68
  6. Step 6: Final answer
    x = 288,630,698.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.