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Finding the Fourth Proportional to 219,511.12, 302,926.80 and 118,909.12

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Solution

The fourth proportional to 219,511.12, 302,926.80 and 118,909.12 is: 164,095.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,511.12 : 302,926.80 = 118,909.12 : x
  2. Step 2: Convert to fraction form
    219,511.12/302,926.80 = 118,909.12/x
  3. Step 3: Cross multiply
    219,511.12x = 302,926.80 × 118,909.12
  4. Step 4: Simplify right side
    219,511.12x = 36,020,759,212.42
  5. Step 5: Solve for x
    x = 36,020,759,212.42/219,511.12
  6. Step 6: Final answer
    x = 164,095.37

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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.