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Finding the Fourth Proportional to 528,007.60, 792,205.80 and 212,690.80

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Solution

The fourth proportional to 528,007.60, 792,205.80 and 212,690.80 is: 319,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,007.60 : 792,205.80 = 212,690.80 : x
  2. Step 2: Convert to fraction form
    528,007.60/792,205.80 = 212,690.80/x
  3. Step 3: Cross multiply
    528,007.60x = 792,205.80 × 212,690.80
  4. Step 4: Simplify right side
    528,007.60x = 168,494,885,366.64
  5. Step 5: Solve for x
    x = 168,494,885,366.64/528,007.60
  6. Step 6: Final answer
    x = 319,114.51

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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.