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Finding the Fourth Proportional to 528,043.30, 792,064.95 and 172,971.70

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Solution

The fourth proportional to 528,043.30, 792,064.95 and 172,971.70 is: 259,457.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,043.30 : 792,064.95 = 172,971.70 : x
  2. Step 2: Convert to fraction form
    528,043.30/792,064.95 = 172,971.70/x
  3. Step 3: Cross multiply
    528,043.30x = 792,064.95 × 172,971.70
  4. Step 4: Simplify right side
    528,043.30x = 137,004,820,911.92
  5. Step 5: Solve for x
    x = 137,004,820,911.92/528,043.30
  6. Step 6: Final answer
    x = 259,457.55

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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.