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Finding the Fourth Proportional to 255,822, 353,172.77 and 153,870.22

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Solution

The fourth proportional to 255,822, 353,172.77 and 153,870.22 is: 212,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,822 : 353,172.77 = 153,870.22 : x
  2. Step 2: Convert to fraction form
    255,822/353,172.77 = 153,870.22/x
  3. Step 3: Cross multiply
    255,822x = 353,172.77 × 153,870.22
  4. Step 4: Simplify right side
    255,822x = 54,342,771,817.91
  5. Step 5: Solve for x
    x = 54,342,771,817.91/255,822
  6. Step 6: Final answer
    x = 212,424.15

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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.