Home / 289,784.40-434,771.28-140,041.92

Finding the Fourth Proportional to 289,784.40, 434,771.28 and 140,041.92

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Solution

The fourth proportional to 289,784.40, 434,771.28 and 140,041.92 is: 210,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,784.40 : 434,771.28 = 140,041.92 : x
  2. Step 2: Convert to fraction form
    289,784.40/434,771.28 = 140,041.92/x
  3. Step 3: Cross multiply
    289,784.40x = 434,771.28 × 140,041.92
  4. Step 4: Simplify right side
    289,784.40x = 60,886,204,812.06
  5. Step 5: Solve for x
    x = 60,886,204,812.06/289,784.40
  6. Step 6: Final answer
    x = 210,108.64

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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.