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Finding the Fourth Proportional to 385,856.08, 578,981.72 and 183,681

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Solution

The fourth proportional to 385,856.08, 578,981.72 and 183,681 is: 275,615.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,856.08 : 578,981.72 = 183,681 : x
  2. Step 2: Convert to fraction form
    385,856.08/578,981.72 = 183,681/x
  3. Step 3: Cross multiply
    385,856.08x = 578,981.72 × 183,681
  4. Step 4: Simplify right side
    385,856.08x = 106,347,941,311.32
  5. Step 5: Solve for x
    x = 106,347,941,311.32/385,856.08
  6. Step 6: Final answer
    x = 275,615.56

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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.