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Finding the Fourth Proportional to 281,392.58, 388,360.47 and 172,562.00

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Solution

The fourth proportional to 281,392.58, 388,360.47 and 172,562.00 is: 238,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,392.58 : 388,360.47 = 172,562.00 : x
  2. Step 2: Convert to fraction form
    281,392.58/388,360.47 = 172,562.00/x
  3. Step 3: Cross multiply
    281,392.58x = 388,360.47 × 172,562.00
  4. Step 4: Simplify right side
    281,392.58x = 67,016,258,129.45
  5. Step 5: Solve for x
    x = 67,016,258,129.45/281,392.58
  6. Step 6: Final answer
    x = 238,159.29

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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.