Home / 289,867.60-434,585.40-149,726.80

Finding the Fourth Proportional to 289,867.60, 434,585.40 and 149,726.80

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Solution

The fourth proportional to 289,867.60, 434,585.40 and 149,726.80 is: 224,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,867.60 : 434,585.40 = 149,726.80 : x
  2. Step 2: Convert to fraction form
    289,867.60/434,585.40 = 149,726.80/x
  3. Step 3: Cross multiply
    289,867.60x = 434,585.40 × 149,726.80
  4. Step 4: Simplify right side
    289,867.60x = 65,069,081,268.72
  5. Step 5: Solve for x
    x = 65,069,081,268.72/289,867.60
  6. Step 6: Final answer
    x = 224,478.63

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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.