Home / 389,157.08-537,029.64-219,391.40

Finding the Fourth Proportional to 389,157.08, 537,029.64 and 219,391.40

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Solution

The fourth proportional to 389,157.08, 537,029.64 and 219,391.40 is: 302,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,157.08 : 537,029.64 = 219,391.40 : x
  2. Step 2: Convert to fraction form
    389,157.08/537,029.64 = 219,391.40/x
  3. Step 3: Cross multiply
    389,157.08x = 537,029.64 × 219,391.40
  4. Step 4: Simplify right side
    389,157.08x = 117,819,684,561.10
  5. Step 5: Solve for x
    x = 117,819,684,561.10/389,157.08
  6. Step 6: Final answer
    x = 302,756.11

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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.