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Finding the Fourth Proportional to 487,554.84, 731,423.76 and 221,334

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Solution

The fourth proportional to 487,554.84, 731,423.76 and 221,334 is: 332,042.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,554.84 : 731,423.76 = 221,334 : x
  2. Step 2: Convert to fraction form
    487,554.84/731,423.76 = 221,334/x
  3. Step 3: Cross multiply
    487,554.84x = 731,423.76 × 221,334
  4. Step 4: Simplify right side
    487,554.84x = 161,888,946,495.84
  5. Step 5: Solve for x
    x = 161,888,946,495.84/487,554.84
  6. Step 6: Final answer
    x = 332,042.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.