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Finding the Fourth Proportional to 385,652.85, 578,852.43 and 186,113.70

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Solution

The fourth proportional to 385,652.85, 578,852.43 and 186,113.70 is: 279,350.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,652.85 : 578,852.43 = 186,113.70 : x
  2. Step 2: Convert to fraction form
    385,652.85/578,852.43 = 186,113.70/x
  3. Step 3: Cross multiply
    385,652.85x = 578,852.43 × 186,113.70
  4. Step 4: Simplify right side
    385,652.85x = 107,732,366,803.37
  5. Step 5: Solve for x
    x = 107,732,366,803.37/385,652.85
  6. Step 6: Final answer
    x = 279,350.63

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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.