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Finding the Fourth Proportional to 528,019.86, 792,066.78 and 212,478.24

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Solution

The fourth proportional to 528,019.86, 792,066.78 and 212,478.24 is: 318,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,019.86 : 792,066.78 = 212,478.24 : x
  2. Step 2: Convert to fraction form
    528,019.86/792,066.78 = 212,478.24/x
  3. Step 3: Cross multiply
    528,019.86x = 792,066.78 × 212,478.24
  4. Step 4: Simplify right side
    528,019.86x = 168,296,955,376.87
  5. Step 5: Solve for x
    x = 168,296,955,376.87/528,019.86
  6. Step 6: Final answer
    x = 318,732.24

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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.