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Finding the Fourth Proportional to 218,935.92, 302,127.30 and 123,440.76

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Solution

The fourth proportional to 218,935.92, 302,127.30 and 123,440.76 is: 170,345.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,935.92 : 302,127.30 = 123,440.76 : x
  2. Step 2: Convert to fraction form
    218,935.92/302,127.30 = 123,440.76/x
  3. Step 3: Cross multiply
    218,935.92x = 302,127.30 × 123,440.76
  4. Step 4: Simplify right side
    218,935.92x = 37,294,823,528.75
  5. Step 5: Solve for x
    x = 37,294,823,528.75/218,935.92
  6. Step 6: Final answer
    x = 170,345.84

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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.