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Finding the Fourth Proportional to 291,684.80, 437,624.40 and 260,328.80

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Solution

The fourth proportional to 291,684.80, 437,624.40 and 260,328.80 is: 390,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,684.80 : 437,624.40 = 260,328.80 : x
  2. Step 2: Convert to fraction form
    291,684.80/437,624.40 = 260,328.80/x
  3. Step 3: Cross multiply
    291,684.80x = 437,624.40 × 260,328.80
  4. Step 4: Simplify right side
    291,684.80x = 113,926,234,902.72
  5. Step 5: Solve for x
    x = 113,926,234,902.72/291,684.80
  6. Step 6: Final answer
    x = 390,579.95

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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.