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Finding the Fourth Proportional to 255,432.47, 352,454.58 and 154,830.47

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Solution

The fourth proportional to 255,432.47, 352,454.58 and 154,830.47 is: 213,640.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,432.47 : 352,454.58 = 154,830.47 : x
  2. Step 2: Convert to fraction form
    255,432.47/352,454.58 = 154,830.47/x
  3. Step 3: Cross multiply
    255,432.47x = 352,454.58 × 154,830.47
  4. Step 4: Simplify right side
    255,432.47x = 54,570,708,275.05
  5. Step 5: Solve for x
    x = 54,570,708,275.05/255,432.47
  6. Step 6: Final answer
    x = 213,640.45

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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.