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Finding the Fourth Proportional to 288,289.25, 432,435.40 and 189,077.70

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Solution

The fourth proportional to 288,289.25, 432,435.40 and 189,077.70 is: 283,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,289.25 : 432,435.40 = 189,077.70 : x
  2. Step 2: Convert to fraction form
    288,289.25/432,435.40 = 189,077.70/x
  3. Step 3: Cross multiply
    288,289.25x = 432,435.40 × 189,077.70
  4. Step 4: Simplify right side
    288,289.25x = 81,763,890,357.89
  5. Step 5: Solve for x
    x = 81,763,890,357.89/288,289.25
  6. Step 6: Final answer
    x = 283,617.55

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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.