Home / 216,364,911.55-324,549,860.50-78,201,011.59

Finding the Fourth Proportional to 216,364,911.55, 324,549,860.50 and 78,201,011.59

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Solution

The fourth proportional to 216,364,911.55, 324,549,860.50 and 78,201,011.59 is: 117,302,418.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,364,911.55 : 324,549,860.50 = 78,201,011.59 : x
  2. Step 2: Convert to fraction form
    216,364,911.55/324,549,860.50 = 78,201,011.59/x
  3. Step 3: Cross multiply
    216,364,911.55x = 324,549,860.50 × 78,201,011.59
  4. Step 4: Simplify right side
    216,364,911.55x = 25,380,127,401,779,764
  5. Step 5: Solve for x
    x = 25,380,127,401,779,764/216,364,911.55
  6. Step 6: Final answer
    x = 117,302,418.49

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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.