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Finding the Fourth Proportional to 452,501.40, 678,320.10 and 168,115.80

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Solution

The fourth proportional to 452,501.40, 678,320.10 and 168,115.80 is: 252,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,501.40 : 678,320.10 = 168,115.80 : x
  2. Step 2: Convert to fraction form
    452,501.40/678,320.10 = 168,115.80/x
  3. Step 3: Cross multiply
    452,501.40x = 678,320.10 × 168,115.80
  4. Step 4: Simplify right side
    452,501.40x = 114,036,326,267.58
  5. Step 5: Solve for x
    x = 114,036,326,267.58/452,501.40
  6. Step 6: Final answer
    x = 252,013.20

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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.