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Finding the Fourth Proportional to 410,475.89, 615,709.58 and 129,993.14

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Solution

The fourth proportional to 410,475.89, 615,709.58 and 129,993.14 is: 194,988.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,475.89 : 615,709.58 = 129,993.14 : x
  2. Step 2: Convert to fraction form
    410,475.89/615,709.58 = 129,993.14/x
  3. Step 3: Cross multiply
    410,475.89x = 615,709.58 × 129,993.14
  4. Step 4: Simplify right side
    410,475.89x = 80,038,017,903.77
  5. Step 5: Solve for x
    x = 80,038,017,903.77/410,475.89
  6. Step 6: Final answer
    x = 194,988.36

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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.