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Finding the Fourth Proportional to 279,359.50, 385,448.88 and 164,642.71

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Solution

The fourth proportional to 279,359.50, 385,448.88 and 164,642.71 is: 227,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,359.50 : 385,448.88 = 164,642.71 : x
  2. Step 2: Convert to fraction form
    279,359.50/385,448.88 = 164,642.71/x
  3. Step 3: Cross multiply
    279,359.50x = 385,448.88 × 164,642.71
  4. Step 4: Simplify right side
    279,359.50x = 63,461,348,169.66
  5. Step 5: Solve for x
    x = 63,461,348,169.66/279,359.50
  6. Step 6: Final answer
    x = 227,167.32

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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.