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Finding the Fourth Proportional to 225,007.80, 310,529.58 and 129,545.40

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Solution

The fourth proportional to 225,007.80, 310,529.58 and 129,545.40 is: 178,783.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,007.80 : 310,529.58 = 129,545.40 : x
  2. Step 2: Convert to fraction form
    225,007.80/310,529.58 = 129,545.40/x
  3. Step 3: Cross multiply
    225,007.80x = 310,529.58 × 129,545.40
  4. Step 4: Simplify right side
    225,007.80x = 40,227,678,652.93
  5. Step 5: Solve for x
    x = 40,227,678,652.93/225,007.80
  6. Step 6: Final answer
    x = 178,783.49

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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.