Home / 384,899.90-531,140.43-212,807.92

Finding the Fourth Proportional to 384,899.90, 531,140.43 and 212,807.92

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Solution

The fourth proportional to 384,899.90, 531,140.43 and 212,807.92 is: 293,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,899.90 : 531,140.43 = 212,807.92 : x
  2. Step 2: Convert to fraction form
    384,899.90/531,140.43 = 212,807.92/x
  3. Step 3: Cross multiply
    384,899.90x = 531,140.43 × 212,807.92
  4. Step 4: Simplify right side
    384,899.90x = 113,030,890,136.21
  5. Step 5: Solve for x
    x = 113,030,890,136.21/384,899.90
  6. Step 6: Final answer
    x = 293,663.08

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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.