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Finding the Fourth Proportional to 410,303.45, 615,393.61 and 129,784.25

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Solution

The fourth proportional to 410,303.45, 615,393.61 and 129,784.25 is: 194,656.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,303.45 : 615,393.61 = 129,784.25 : x
  2. Step 2: Convert to fraction form
    410,303.45/615,393.61 = 129,784.25/x
  3. Step 3: Cross multiply
    410,303.45x = 615,393.61 × 129,784.25
  4. Step 4: Simplify right side
    410,303.45x = 79,868,398,128.64
  5. Step 5: Solve for x
    x = 79,868,398,128.64/410,303.45
  6. Step 6: Final answer
    x = 194,656.90

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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.