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Finding the Fourth Proportional to 218,857.32, 328,285.98 and 52,645.32

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Solution

The fourth proportional to 218,857.32, 328,285.98 and 52,645.32 is: 78,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,857.32 : 328,285.98 = 52,645.32 : x
  2. Step 2: Convert to fraction form
    218,857.32/328,285.98 = 52,645.32/x
  3. Step 3: Cross multiply
    218,857.32x = 328,285.98 × 52,645.32
  4. Step 4: Simplify right side
    218,857.32x = 17,282,720,468.61
  5. Step 5: Solve for x
    x = 17,282,720,468.61/218,857.32
  6. Step 6: Final answer
    x = 78,967.98

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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.