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Finding the Fourth Proportional to 309,646.40, 427,351.56 and 182,333.84

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Solution

The fourth proportional to 309,646.40, 427,351.56 and 182,333.84 is: 251,643.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,646.40 : 427,351.56 = 182,333.84 : x
  2. Step 2: Convert to fraction form
    309,646.40/427,351.56 = 182,333.84/x
  3. Step 3: Cross multiply
    309,646.40x = 427,351.56 × 182,333.84
  4. Step 4: Simplify right side
    309,646.40x = 77,920,650,964.79
  5. Step 5: Solve for x
    x = 77,920,650,964.79/309,646.40
  6. Step 6: Final answer
    x = 251,643.98

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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.