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Finding the Fourth Proportional to 461,128.66, 636,341.88 and 254,405.32

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Solution

The fourth proportional to 461,128.66, 636,341.88 and 254,405.32 is: 351,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,128.66 : 636,341.88 = 254,405.32 : x
  2. Step 2: Convert to fraction form
    461,128.66/636,341.88 = 254,405.32/x
  3. Step 3: Cross multiply
    461,128.66x = 636,341.88 × 254,405.32
  4. Step 4: Simplify right side
    461,128.66x = 161,888,759,610.80
  5. Step 5: Solve for x
    x = 161,888,759,610.80/461,128.66
  6. Step 6: Final answer
    x = 351,070.70

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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.