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Finding the Fourth Proportional to 218,875.76, 328,313.60 and 52,663.76

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Solution

The fourth proportional to 218,875.76, 328,313.60 and 52,663.76 is: 78,995.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,875.76 : 328,313.60 = 52,663.76 : x
  2. Step 2: Convert to fraction form
    218,875.76/328,313.60 = 52,663.76/x
  3. Step 3: Cross multiply
    218,875.76x = 328,313.60 × 52,663.76
  4. Step 4: Simplify right side
    218,875.76x = 17,290,228,635.14
  5. Step 5: Solve for x
    x = 17,290,228,635.14/218,875.76
  6. Step 6: Final answer
    x = 78,995.63

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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.