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Finding the Fourth Proportional to 310,775.73, 428,867.39 and 172,952.35

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Solution

The fourth proportional to 310,775.73, 428,867.39 and 172,952.35 is: 238,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,775.73 : 428,867.39 = 172,952.35 : x
  2. Step 2: Convert to fraction form
    310,775.73/428,867.39 = 172,952.35/x
  3. Step 3: Cross multiply
    310,775.73x = 428,867.39 × 172,952.35
  4. Step 4: Simplify right side
    310,775.73x = 74,173,619,929.77
  5. Step 5: Solve for x
    x = 74,173,619,929.77/310,775.73
  6. Step 6: Final answer
    x = 238,672.50

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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.