Home / 289,478.18-434,341.20-121,037.88

Finding the Fourth Proportional to 289,478.18, 434,341.20 and 121,037.88

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Solution

The fourth proportional to 289,478.18, 434,341.20 and 121,037.88 is: 181,608.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,478.18 : 434,341.20 = 121,037.88 : x
  2. Step 2: Convert to fraction form
    289,478.18/434,341.20 = 121,037.88/x
  3. Step 3: Cross multiply
    289,478.18x = 434,341.20 × 121,037.88
  4. Step 4: Simplify right side
    289,478.18x = 52,571,738,044.66
  5. Step 5: Solve for x
    x = 52,571,738,044.66/289,478.18
  6. Step 6: Final answer
    x = 181,608.64

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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.