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Finding the Fourth Proportional to 255,540.69, 352,646.65 and 153,567.72

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Solution

The fourth proportional to 255,540.69, 352,646.65 and 153,567.72 is: 211,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,540.69 : 352,646.65 = 153,567.72 : x
  2. Step 2: Convert to fraction form
    255,540.69/352,646.65 = 153,567.72/x
  3. Step 3: Cross multiply
    255,540.69x = 352,646.65 × 153,567.72
  4. Step 4: Simplify right side
    255,540.69x = 54,155,140,242.90
  5. Step 5: Solve for x
    x = 54,155,140,242.90/255,540.69
  6. Step 6: Final answer
    x = 211,923.75

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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.