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Finding the Fourth Proportional to 357,282.30, 535,515.77 and 143,913.58

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Solution

The fourth proportional to 357,282.30, 535,515.77 and 143,913.58 is: 215,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,282.30 : 535,515.77 = 143,913.58 : x
  2. Step 2: Convert to fraction form
    357,282.30/535,515.77 = 143,913.58/x
  3. Step 3: Cross multiply
    357,282.30x = 535,515.77 × 143,913.58
  4. Step 4: Simplify right side
    357,282.30x = 77,067,990,628.15
  5. Step 5: Solve for x
    x = 77,067,990,628.15/357,282.30
  6. Step 6: Final answer
    x = 215,706.15

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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.