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Finding the Fourth Proportional to 285,297.39, 393,710.40 and 157,973.00

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Solution

The fourth proportional to 285,297.39, 393,710.40 and 157,973.00 is: 218,002.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,297.39 : 393,710.40 = 157,973.00 : x
  2. Step 2: Convert to fraction form
    285,297.39/393,710.40 = 157,973.00/x
  3. Step 3: Cross multiply
    285,297.39x = 393,710.40 × 157,973.00
  4. Step 4: Simplify right side
    285,297.39x = 62,195,611,050.65
  5. Step 5: Solve for x
    x = 62,195,611,050.65/285,297.39
  6. Step 6: Final answer
    x = 218,002.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.