Home / 385,339,241.07-531,768,426.05-209,127,194.51

Finding the Fourth Proportional to 385,339,241.07, 531,768,426.05 and 209,127,194.51

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Solution

The fourth proportional to 385,339,241.07, 531,768,426.05 and 209,127,194.51 is: 288,595,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,339,241.07 : 531,768,426.05 = 209,127,194.51 : x
  2. Step 2: Convert to fraction form
    385,339,241.07/531,768,426.05 = 209,127,194.51/x
  3. Step 3: Cross multiply
    385,339,241.07x = 531,768,426.05 × 209,127,194.51
  4. Step 4: Simplify right side
    385,339,241.07x = 111,207,239,065,130,416
  5. Step 5: Solve for x
    x = 111,207,239,065,130,416/385,339,241.07
  6. Step 6: Final answer
    x = 288,595,676.78

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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.