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Finding the Fourth Proportional to 310,328.34, 428,253.39 and 176,192.34

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Solution

The fourth proportional to 310,328.34, 428,253.39 and 176,192.34 is: 243,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,328.34 : 428,253.39 = 176,192.34 : x
  2. Step 2: Convert to fraction form
    310,328.34/428,253.39 = 176,192.34/x
  3. Step 3: Cross multiply
    310,328.34x = 428,253.39 × 176,192.34
  4. Step 4: Simplify right side
    310,328.34x = 75,454,966,897.03
  5. Step 5: Solve for x
    x = 75,454,966,897.03/310,328.34
  6. Step 6: Final answer
    x = 243,145.59

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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.