Home / 528,088.20-792,521.10-212,771.40

Finding the Fourth Proportional to 528,088.20, 792,521.10 and 212,771.40

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Solution

The fourth proportional to 528,088.20, 792,521.10 and 212,771.40 is: 319,313.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,088.20 : 792,521.10 = 212,771.40 : x
  2. Step 2: Convert to fraction form
    528,088.20/792,521.10 = 212,771.40/x
  3. Step 3: Cross multiply
    528,088.20x = 792,521.10 × 212,771.40
  4. Step 4: Simplify right side
    528,088.20x = 168,625,823,976.54
  5. Step 5: Solve for x
    x = 168,625,823,976.54/528,088.20
  6. Step 6: Final answer
    x = 319,313.75

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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.