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Finding the Fourth Proportional to 401,624.52, 602,438.84 and 135,387.32

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Solution

The fourth proportional to 401,624.52, 602,438.84 and 135,387.32 is: 203,081.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,624.52 : 602,438.84 = 135,387.32 : x
  2. Step 2: Convert to fraction form
    401,624.52/602,438.84 = 135,387.32/x
  3. Step 3: Cross multiply
    401,624.52x = 602,438.84 × 135,387.32
  4. Step 4: Simplify right side
    401,624.52x = 81,562,580,011.51
  5. Step 5: Solve for x
    x = 81,562,580,011.51/401,624.52
  6. Step 6: Final answer
    x = 203,081.67

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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.