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Finding the Fourth Proportional to 255,228.40, 352,211.68 and 142,051.20

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Solution

The fourth proportional to 255,228.40, 352,211.68 and 142,051.20 is: 196,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,228.40 : 352,211.68 = 142,051.20 : x
  2. Step 2: Convert to fraction form
    255,228.40/352,211.68 = 142,051.20/x
  3. Step 3: Cross multiply
    255,228.40x = 352,211.68 × 142,051.20
  4. Step 4: Simplify right side
    255,228.40x = 50,032,091,798.02
  5. Step 5: Solve for x
    x = 50,032,091,798.02/255,228.40
  6. Step 6: Final answer
    x = 196,028.70

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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.