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Finding the Fourth Proportional to 218,888.76, 302,180.64 and 155,378.28

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Solution

The fourth proportional to 218,888.76, 302,180.64 and 155,378.28 is: 214,503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.76 : 302,180.64 = 155,378.28 : x
  2. Step 2: Convert to fraction form
    218,888.76/302,180.64 = 155,378.28/x
  3. Step 3: Cross multiply
    218,888.76x = 302,180.64 × 155,378.28
  4. Step 4: Simplify right side
    218,888.76x = 46,952,308,092.50
  5. Step 5: Solve for x
    x = 46,952,308,092.50/218,888.76
  6. Step 6: Final answer
    x = 214,503.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.