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Finding the Fourth Proportional to 219,259.78, 302,578.80 and 118,657.78

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Solution

The fourth proportional to 219,259.78, 302,578.80 and 118,657.78 is: 163,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,259.78 : 302,578.80 = 118,657.78 : x
  2. Step 2: Convert to fraction form
    219,259.78/302,578.80 = 118,657.78/x
  3. Step 3: Cross multiply
    219,259.78x = 302,578.80 × 118,657.78
  4. Step 4: Simplify right side
    219,259.78x = 35,903,328,683.06
  5. Step 5: Solve for x
    x = 35,903,328,683.06/219,259.78
  6. Step 6: Final answer
    x = 163,747.90

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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.