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Finding the Fourth Proportional to 410,648.32, 615,994.40 and 130,187.52

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Solution

The fourth proportional to 410,648.32, 615,994.40 and 130,187.52 is: 195,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,648.32 : 615,994.40 = 130,187.52 : x
  2. Step 2: Convert to fraction form
    410,648.32/615,994.40 = 130,187.52/x
  3. Step 3: Cross multiply
    410,648.32x = 615,994.40 × 130,187.52
  4. Step 4: Simplify right side
    410,648.32x = 80,194,783,269.89
  5. Step 5: Solve for x
    x = 80,194,783,269.89/410,648.32
  6. Step 6: Final answer
    x = 195,288.23

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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.