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Finding the Fourth Proportional to 452,326.50, 678,800.79 and 156,838.50

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Solution

The fourth proportional to 452,326.50, 678,800.79 and 156,838.50 is: 235,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,326.50 : 678,800.79 = 156,838.50 : x
  2. Step 2: Convert to fraction form
    452,326.50/678,800.79 = 156,838.50/x
  3. Step 3: Cross multiply
    452,326.50x = 678,800.79 × 156,838.50
  4. Step 4: Simplify right side
    452,326.50x = 106,462,097,702.42
  5. Step 5: Solve for x
    x = 106,462,097,702.42/452,326.50
  6. Step 6: Final answer
    x = 235,365.60

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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.