Home / 289,818.95-434,729.57-121,221.02

Finding the Fourth Proportional to 289,818.95, 434,729.57 and 121,221.02

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Solution

The fourth proportional to 289,818.95, 434,729.57 and 121,221.02 is: 181,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,818.95 : 434,729.57 = 121,221.02 : x
  2. Step 2: Convert to fraction form
    289,818.95/434,729.57 = 121,221.02/x
  3. Step 3: Cross multiply
    289,818.95x = 434,729.57 × 121,221.02
  4. Step 4: Simplify right side
    289,818.95x = 52,698,362,380.28
  5. Step 5: Solve for x
    x = 52,698,362,380.28/289,818.95
  6. Step 6: Final answer
    x = 181,832.01

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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.