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Finding the Fourth Proportional to 281,666.25, 388,699.43 and 162,434.25

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Solution

The fourth proportional to 281,666.25, 388,699.43 and 162,434.25 is: 224,159.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,666.25 : 388,699.43 = 162,434.25 : x
  2. Step 2: Convert to fraction form
    281,666.25/388,699.43 = 162,434.25/x
  3. Step 3: Cross multiply
    281,666.25x = 388,699.43 × 162,434.25
  4. Step 4: Simplify right side
    281,666.25x = 63,138,099,575.31
  5. Step 5: Solve for x
    x = 63,138,099,575.31/281,666.25
  6. Step 6: Final answer
    x = 224,159.27

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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.