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Finding the Fourth Proportional to 255,967.98, 353,071.35 and 155,365.98

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Solution

The fourth proportional to 255,967.98, 353,071.35 and 155,365.98 is: 214,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,967.98 : 353,071.35 = 155,365.98 : x
  2. Step 2: Convert to fraction form
    255,967.98/353,071.35 = 155,365.98/x
  3. Step 3: Cross multiply
    255,967.98x = 353,071.35 × 155,365.98
  4. Step 4: Simplify right side
    255,967.98x = 54,855,276,302.67
  5. Step 5: Solve for x
    x = 54,855,276,302.67/255,967.98
  6. Step 6: Final answer
    x = 214,305.23

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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.