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Finding the Fourth Proportional to 452,572.72, 678,946.65 and 172,068.10

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Solution

The fourth proportional to 452,572.72, 678,946.65 and 172,068.10 is: 258,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,572.72 : 678,946.65 = 172,068.10 : x
  2. Step 2: Convert to fraction form
    452,572.72/678,946.65 = 172,068.10/x
  3. Step 3: Cross multiply
    452,572.72x = 678,946.65 × 172,068.10
  4. Step 4: Simplify right side
    452,572.72x = 116,825,058,369.50
  5. Step 5: Solve for x
    x = 116,825,058,369.50/452,572.72
  6. Step 6: Final answer
    x = 258,135.44

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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.