Home / 385,685,575.52-532,249,932.96-209,477,017.76

Finding the Fourth Proportional to 385,685,575.52, 532,249,932.96 and 209,477,017.76

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Solution

The fourth proportional to 385,685,575.52, 532,249,932.96 and 209,477,017.76 is: 289,080,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,685,575.52 : 532,249,932.96 = 209,477,017.76 : x
  2. Step 2: Convert to fraction form
    385,685,575.52/532,249,932.96 = 209,477,017.76/x
  3. Step 3: Cross multiply
    385,685,575.52x = 532,249,932.96 × 209,477,017.76
  4. Step 4: Simplify right side
    385,685,575.52x = 111,494,128,659,420,720
  5. Step 5: Solve for x
    x = 111,494,128,659,420,720/385,685,575.52
  6. Step 6: Final answer
    x = 289,080,369.44

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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.