Home / 389,085.40-583,628.10-108,602.20

Finding the Fourth Proportional to 389,085.40, 583,628.10 and 108,602.20

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Solution

The fourth proportional to 389,085.40, 583,628.10 and 108,602.20 is: 162,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,085.40 : 583,628.10 = 108,602.20 : x
  2. Step 2: Convert to fraction form
    389,085.40/583,628.10 = 108,602.20/x
  3. Step 3: Cross multiply
    389,085.40x = 583,628.10 × 108,602.20
  4. Step 4: Simplify right side
    389,085.40x = 63,383,295,641.82
  5. Step 5: Solve for x
    x = 63,383,295,641.82/389,085.40
  6. Step 6: Final answer
    x = 162,903.30

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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.