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Finding the Fourth Proportional to 225,484.76, 311,156.94 and 123,504.95

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Solution

The fourth proportional to 225,484.76, 311,156.94 and 123,504.95 is: 170,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,484.76 : 311,156.94 = 123,504.95 : x
  2. Step 2: Convert to fraction form
    225,484.76/311,156.94 = 123,504.95/x
  3. Step 3: Cross multiply
    225,484.76x = 311,156.94 × 123,504.95
  4. Step 4: Simplify right side
    225,484.76x = 38,429,423,557.89
  5. Step 5: Solve for x
    x = 38,429,423,557.89/225,484.76
  6. Step 6: Final answer
    x = 170,430.25

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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.