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Finding the Fourth Proportional to 225,035.01, 310,545.30 and 128,244.63

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Solution

The fourth proportional to 225,035.01, 310,545.30 and 128,244.63 is: 176,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,035.01 : 310,545.30 = 128,244.63 : x
  2. Step 2: Convert to fraction form
    225,035.01/310,545.30 = 128,244.63/x
  3. Step 3: Cross multiply
    225,035.01x = 310,545.30 × 128,244.63
  4. Step 4: Simplify right side
    225,035.01x = 39,825,767,096.74
  5. Step 5: Solve for x
    x = 39,825,767,096.74/225,035.01
  6. Step 6: Final answer
    x = 176,975.87

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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.