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Finding the Fourth Proportional to 389,162.05, 583,491.51 and 152,528.65

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Solution

The fourth proportional to 389,162.05, 583,491.51 and 152,528.65 is: 228,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,162.05 : 583,491.51 = 152,528.65 : x
  2. Step 2: Convert to fraction form
    389,162.05/583,491.51 = 152,528.65/x
  3. Step 3: Cross multiply
    389,162.05x = 583,491.51 × 152,528.65
  4. Step 4: Simplify right side
    389,162.05x = 88,999,170,848.03
  5. Step 5: Solve for x
    x = 88,999,170,848.03/389,162.05
  6. Step 6: Final answer
    x = 228,694.37

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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.