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Finding the Fourth Proportional to 218,929.50, 302,122.57 and 118,327.50

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Solution

The fourth proportional to 218,929.50, 302,122.57 and 118,327.50 is: 163,291.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,929.50 : 302,122.57 = 118,327.50 : x
  2. Step 2: Convert to fraction form
    218,929.50/302,122.57 = 118,327.50/x
  3. Step 3: Cross multiply
    218,929.50x = 302,122.57 × 118,327.50
  4. Step 4: Simplify right side
    218,929.50x = 35,749,406,299.42
  5. Step 5: Solve for x
    x = 35,749,406,299.42/218,929.50
  6. Step 6: Final answer
    x = 163,291.87

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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.