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Finding the Fourth Proportional to 255,971.04, 353,303.28 and 155,453.28

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Solution

The fourth proportional to 255,971.04, 353,303.28 and 155,453.28 is: 214,563.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,971.04 : 353,303.28 = 155,453.28 : x
  2. Step 2: Convert to fraction form
    255,971.04/353,303.28 = 155,453.28/x
  3. Step 3: Cross multiply
    255,971.04x = 353,303.28 × 155,453.28
  4. Step 4: Simplify right side
    255,971.04x = 54,922,153,710.76
  5. Step 5: Solve for x
    x = 54,922,153,710.76/255,971.04
  6. Step 6: Final answer
    x = 214,563.94

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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.