Home / 389,143.20-583,277.40-199,530.30

Finding the Fourth Proportional to 389,143.20, 583,277.40 and 199,530.30

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Solution

The fourth proportional to 389,143.20, 583,277.40 and 199,530.30 is: 299,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,143.20 : 583,277.40 = 199,530.30 : x
  2. Step 2: Convert to fraction form
    389,143.20/583,277.40 = 199,530.30/x
  3. Step 3: Cross multiply
    389,143.20x = 583,277.40 × 199,530.30
  4. Step 4: Simplify right side
    389,143.20x = 116,381,514,605.22
  5. Step 5: Solve for x
    x = 116,381,514,605.22/389,143.20
  6. Step 6: Final answer
    x = 299,071.18

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1.5x scale

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.