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Finding the Fourth Proportional to 255,485.16, 352,580.40 and 142,307.88

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Solution

The fourth proportional to 255,485.16, 352,580.40 and 142,307.88 is: 196,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,485.16 : 352,580.40 = 142,307.88 : x
  2. Step 2: Convert to fraction form
    255,485.16/352,580.40 = 142,307.88/x
  3. Step 3: Cross multiply
    255,485.16x = 352,580.40 × 142,307.88
  4. Step 4: Simplify right side
    255,485.16x = 50,174,969,253.55
  5. Step 5: Solve for x
    x = 50,174,969,253.55/255,485.16
  6. Step 6: Final answer
    x = 196,390.93

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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.