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Finding the Fourth Proportional to 240,567.64, 360,931.55 and 80,659.40

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Solution

The fourth proportional to 240,567.64, 360,931.55 and 80,659.40 is: 121,015.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,567.64 : 360,931.55 = 80,659.40 : x
  2. Step 2: Convert to fraction form
    240,567.64/360,931.55 = 80,659.40/x
  3. Step 3: Cross multiply
    240,567.64x = 360,931.55 × 80,659.40
  4. Step 4: Simplify right side
    240,567.64x = 29,112,520,056.12
  5. Step 5: Solve for x
    x = 29,112,520,056.12/240,567.64
  6. Step 6: Final answer
    x = 121,015.95

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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.