Home / 286,249,668-395,041,415.54-215,560,562.40

Finding the Fourth Proportional to 286,249,668, 395,041,415.54 and 215,560,562.40

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Solution

The fourth proportional to 286,249,668, 395,041,415.54 and 215,560,562.40 is: 297,486,282.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,249,668 : 395,041,415.54 = 215,560,562.40 : x
  2. Step 2: Convert to fraction form
    286,249,668/395,041,415.54 = 215,560,562.40/x
  3. Step 3: Cross multiply
    286,249,668x = 395,041,415.54 × 215,560,562.40
  4. Step 4: Simplify right side
    286,249,668x = 85,155,349,704,016,704
  5. Step 5: Solve for x
    x = 85,155,349,704,016,704/286,249,668
  6. Step 6: Final answer
    x = 297,486,282.86

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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.