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Finding the Fourth Proportional to 410,614.59, 615,923.31 and 126,303.21

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Solution

The fourth proportional to 410,614.59, 615,923.31 and 126,303.21 is: 189,455.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,614.59 : 615,923.31 = 126,303.21 : x
  2. Step 2: Convert to fraction form
    410,614.59/615,923.31 = 126,303.21/x
  3. Step 3: Cross multiply
    410,614.59x = 615,923.31 × 126,303.21
  4. Step 4: Simplify right side
    410,614.59x = 77,793,091,166.83
  5. Step 5: Solve for x
    x = 77,793,091,166.83/410,614.59
  6. Step 6: Final answer
    x = 189,455.25

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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.