Home / 642,971.20-964,165.20-243,479.20

Finding the Fourth Proportional to 642,971.20, 964,165.20 and 243,479.20

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Solution

The fourth proportional to 642,971.20, 964,165.20 and 243,479.20 is: 365,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,971.20 : 964,165.20 = 243,479.20 : x
  2. Step 2: Convert to fraction form
    642,971.20/964,165.20 = 243,479.20/x
  3. Step 3: Cross multiply
    642,971.20x = 964,165.20 × 243,479.20
  4. Step 4: Simplify right side
    642,971.20x = 234,754,171,563.84
  5. Step 5: Solve for x
    x = 234,754,171,563.84/642,971.20
  6. Step 6: Final answer
    x = 365,108.38

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1.5x scale

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.