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Finding the Fourth Proportional to 388,264.59, 582,155.64 and 163,509.30

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Solution

The fourth proportional to 388,264.59, 582,155.64 and 163,509.30 is: 245,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,264.59 : 582,155.64 = 163,509.30 : x
  2. Step 2: Convert to fraction form
    388,264.59/582,155.64 = 163,509.30/x
  3. Step 3: Cross multiply
    388,264.59x = 582,155.64 × 163,509.30
  4. Step 4: Simplify right side
    388,264.59x = 95,187,861,187.45
  5. Step 5: Solve for x
    x = 95,187,861,187.45/388,264.59
  6. Step 6: Final answer
    x = 245,162.35

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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.