Home / 389,602.04-537,659.21-215,171.78

Finding the Fourth Proportional to 389,602.04, 537,659.21 and 215,171.78

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Solution

The fourth proportional to 389,602.04, 537,659.21 and 215,171.78 is: 296,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,602.04 : 537,659.21 = 215,171.78 : x
  2. Step 2: Convert to fraction form
    389,602.04/537,659.21 = 215,171.78/x
  3. Step 3: Cross multiply
    389,602.04x = 537,659.21 × 215,171.78
  4. Step 4: Simplify right side
    389,602.04x = 115,689,088,173.24
  5. Step 5: Solve for x
    x = 115,689,088,173.24/389,602.04
  6. Step 6: Final answer
    x = 296,941.69

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1.5x scale

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.