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Finding the Fourth Proportional to 302,921.52, 418,040.10 and 173,871.06

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Solution

The fourth proportional to 302,921.52, 418,040.10 and 173,871.06 is: 239,946.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,921.52 : 418,040.10 = 173,871.06 : x
  2. Step 2: Convert to fraction form
    302,921.52/418,040.10 = 173,871.06/x
  3. Step 3: Cross multiply
    302,921.52x = 418,040.10 × 173,871.06
  4. Step 4: Simplify right side
    302,921.52x = 72,685,075,309.51
  5. Step 5: Solve for x
    x = 72,685,075,309.51/302,921.52
  6. Step 6: Final answer
    x = 239,946.89

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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.