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Finding the Fourth Proportional to 219,477.84, 302,885.68 and 123,988.56

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Solution

The fourth proportional to 219,477.84, 302,885.68 and 123,988.56 is: 171,107.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,477.84 : 302,885.68 = 123,988.56 : x
  2. Step 2: Convert to fraction form
    219,477.84/302,885.68 = 123,988.56/x
  3. Step 3: Cross multiply
    219,477.84x = 302,885.68 × 123,988.56
  4. Step 4: Simplify right side
    219,477.84x = 37,554,359,307.82
  5. Step 5: Solve for x
    x = 37,554,359,307.82/219,477.84
  6. Step 6: Final answer
    x = 171,107.75

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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.