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Finding the Fourth Proportional to 558,248.72, 770,386.98 and 303,601.76

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Solution

The fourth proportional to 558,248.72, 770,386.98 and 303,601.76 is: 418,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,248.72 : 770,386.98 = 303,601.76 : x
  2. Step 2: Convert to fraction form
    558,248.72/770,386.98 = 303,601.76/x
  3. Step 3: Cross multiply
    558,248.72x = 770,386.98 × 303,601.76
  4. Step 4: Simplify right side
    558,248.72x = 233,890,843,009.09
  5. Step 5: Solve for x
    x = 233,890,843,009.09/558,248.72
  6. Step 6: Final answer
    x = 418,972.47

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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.