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Finding the Fourth Proportional to 310,529.88, 428,521.32 and 174,569.56

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Solution

The fourth proportional to 310,529.88, 428,521.32 and 174,569.56 is: 240,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,529.88 : 428,521.32 = 174,569.56 : x
  2. Step 2: Convert to fraction form
    310,529.88/428,521.32 = 174,569.56/x
  3. Step 3: Cross multiply
    310,529.88x = 428,521.32 × 174,569.56
  4. Step 4: Simplify right side
    310,529.88x = 74,806,778,283.02
  5. Step 5: Solve for x
    x = 74,806,778,283.02/310,529.88
  6. Step 6: Final answer
    x = 240,900.42

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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.