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Finding the Fourth Proportional to 310,628.15, 428,664.69 and 176,492.15

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Solution

The fourth proportional to 310,628.15, 428,664.69 and 176,492.15 is: 243,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,628.15 : 428,664.69 = 176,492.15 : x
  2. Step 2: Convert to fraction form
    310,628.15/428,664.69 = 176,492.15/x
  3. Step 3: Cross multiply
    310,628.15x = 428,664.69 × 176,492.15
  4. Step 4: Simplify right side
    310,628.15x = 75,655,952,231.35
  5. Step 5: Solve for x
    x = 75,655,952,231.35/310,628.15
  6. Step 6: Final answer
    x = 243,557.94

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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.