Home / 215,873,254.40-323,697,907.20-79,488,435.20

Finding the Fourth Proportional to 215,873,254.40, 323,697,907.20 and 79,488,435.20

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Solution

The fourth proportional to 215,873,254.40, 323,697,907.20 and 79,488,435.20 is: 119,191,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,873,254.40 : 323,697,907.20 = 79,488,435.20 : x
  2. Step 2: Convert to fraction form
    215,873,254.40/323,697,907.20 = 79,488,435.20/x
  3. Step 3: Cross multiply
    215,873,254.40x = 323,697,907.20 × 79,488,435.20
  4. Step 4: Simplify right side
    215,873,254.40x = 25,730,240,120,842,812
  5. Step 5: Solve for x
    x = 25,730,240,120,842,812/215,873,254.40
  6. Step 6: Final answer
    x = 119,191,421.80

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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.