Home / 287,333,674.20-431,000,511.30-172,447,939.80

Finding the Fourth Proportional to 287,333,674.20, 431,000,511.30 and 172,447,939.80

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Solution

The fourth proportional to 287,333,674.20, 431,000,511.30 and 172,447,939.80 is: 258,671,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,333,674.20 : 431,000,511.30 = 172,447,939.80 : x
  2. Step 2: Convert to fraction form
    287,333,674.20/431,000,511.30 = 172,447,939.80/x
  3. Step 3: Cross multiply
    287,333,674.20x = 431,000,511.30 × 172,447,939.80
  4. Step 4: Simplify right side
    287,333,674.20x = 74,325,150,226,431,632
  5. Step 5: Solve for x
    x = 74,325,150,226,431,632/287,333,674.20
  6. Step 6: Final answer
    x = 258,671,909.70

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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.