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Finding the Fourth Proportional to 385,892.45, 578,529.56 and 183,386.93

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Solution

The fourth proportional to 385,892.45, 578,529.56 and 183,386.93 is: 274,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,892.45 : 578,529.56 = 183,386.93 : x
  2. Step 2: Convert to fraction form
    385,892.45/578,529.56 = 183,386.93/x
  3. Step 3: Cross multiply
    385,892.45x = 578,529.56 × 183,386.93
  4. Step 4: Simplify right side
    385,892.45x = 106,094,756,456.92
  5. Step 5: Solve for x
    x = 106,094,756,456.92/385,892.45
  6. Step 6: Final answer
    x = 274,933.49

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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.