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Finding the Fourth Proportional to 255,972.98, 353,078.25 and 155,370.98

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Solution

The fourth proportional to 255,972.98, 353,078.25 and 155,370.98 is: 214,312.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,972.98 : 353,078.25 = 155,370.98 : x
  2. Step 2: Convert to fraction form
    255,972.98/353,078.25 = 155,370.98/x
  3. Step 3: Cross multiply
    255,972.98x = 353,078.25 × 155,370.98
  4. Step 4: Simplify right side
    255,972.98x = 54,858,113,719.19
  5. Step 5: Solve for x
    x = 54,858,113,719.19/255,972.98
  6. Step 6: Final answer
    x = 214,312.13

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1.5x scale

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.