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Finding the Fourth Proportional to 353,415.60, 530,120.94 and 143,050.50

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Solution

The fourth proportional to 353,415.60, 530,120.94 and 143,050.50 is: 214,574.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,415.60 : 530,120.94 = 143,050.50 : x
  2. Step 2: Convert to fraction form
    353,415.60/530,120.94 = 143,050.50/x
  3. Step 3: Cross multiply
    353,415.60x = 530,120.94 × 143,050.50
  4. Step 4: Simplify right side
    353,415.60x = 75,834,065,527.47
  5. Step 5: Solve for x
    x = 75,834,065,527.47/353,415.60
  6. Step 6: Final answer
    x = 214,574.75

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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.