Home / 459,243,249.72-688,474,713.78-213,742,449.24

Finding the Fourth Proportional to 459,243,249.72, 688,474,713.78 and 213,742,449.24

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Solution

The fourth proportional to 459,243,249.72, 688,474,713.78 and 213,742,449.24 is: 320,432,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,243,249.72 : 688,474,713.78 = 213,742,449.24 : x
  2. Step 2: Convert to fraction form
    459,243,249.72/688,474,713.78 = 213,742,449.24/x
  3. Step 3: Cross multiply
    459,243,249.72x = 688,474,713.78 × 213,742,449.24
  4. Step 4: Simplify right side
    459,243,249.72x = 147,156,271,563,145,184
  5. Step 5: Solve for x
    x = 147,156,271,563,145,184/459,243,249.72
  6. Step 6: Final answer
    x = 320,432,083.98

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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.