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Finding the Fourth Proportional to 528,018.86, 792,065.28 and 212,477.24

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Solution

The fourth proportional to 528,018.86, 792,065.28 and 212,477.24 is: 318,730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,018.86 : 792,065.28 = 212,477.24 : x
  2. Step 2: Convert to fraction form
    528,018.86/792,065.28 = 212,477.24/x
  3. Step 3: Cross multiply
    528,018.86x = 792,065.28 × 212,477.24
  4. Step 4: Simplify right side
    528,018.86x = 168,295,844,594.23
  5. Step 5: Solve for x
    x = 168,295,844,594.23/528,018.86
  6. Step 6: Final answer
    x = 318,730.74

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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.