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Finding the Fourth Proportional to 407,017.92, 561,718.37 and 225,788.28

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Solution

The fourth proportional to 407,017.92, 561,718.37 and 225,788.28 is: 311,606.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,017.92 : 561,718.37 = 225,788.28 : x
  2. Step 2: Convert to fraction form
    407,017.92/561,718.37 = 225,788.28/x
  3. Step 3: Cross multiply
    407,017.92x = 561,718.37 × 225,788.28
  4. Step 4: Simplify right side
    407,017.92x = 126,829,423,477.76
  5. Step 5: Solve for x
    x = 126,829,423,477.76/407,017.92
  6. Step 6: Final answer
    x = 311,606.49

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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.