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Finding the Fourth Proportional to 357,743.39, 536,281.46 and 120,920.45

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Solution

The fourth proportional to 357,743.39, 536,281.46 and 120,920.45 is: 181,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,743.39 : 536,281.46 = 120,920.45 : x
  2. Step 2: Convert to fraction form
    357,743.39/536,281.46 = 120,920.45/x
  3. Step 3: Cross multiply
    357,743.39x = 536,281.46 × 120,920.45
  4. Step 4: Simplify right side
    357,743.39x = 64,847,392,637.30
  5. Step 5: Solve for x
    x = 64,847,392,637.30/357,743.39
  6. Step 6: Final answer
    x = 181,267.90

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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.