Home / 289,677.20-434,515.80-76,444.70

Finding the Fourth Proportional to 289,677.20, 434,515.80 and 76,444.70

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Solution

The fourth proportional to 289,677.20, 434,515.80 and 76,444.70 is: 114,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,677.20 : 434,515.80 = 76,444.70 : x
  2. Step 2: Convert to fraction form
    289,677.20/434,515.80 = 76,444.70/x
  3. Step 3: Cross multiply
    289,677.20x = 434,515.80 × 76,444.70
  4. Step 4: Simplify right side
    289,677.20x = 33,216,429,976.26
  5. Step 5: Solve for x
    x = 33,216,429,976.26/289,677.20
  6. Step 6: Final answer
    x = 114,667.05

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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.