Home / 256,913.40-385,370.10-69,924.60

Finding the Fourth Proportional to 256,913.40, 385,370.10 and 69,924.60

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Solution

The fourth proportional to 256,913.40, 385,370.10 and 69,924.60 is: 104,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,913.40 : 385,370.10 = 69,924.60 : x
  2. Step 2: Convert to fraction form
    256,913.40/385,370.10 = 69,924.60/x
  3. Step 3: Cross multiply
    256,913.40x = 385,370.10 × 69,924.60
  4. Step 4: Simplify right side
    256,913.40x = 26,946,850,094.46
  5. Step 5: Solve for x
    x = 26,946,850,094.46/256,913.40
  6. Step 6: Final answer
    x = 104,886.90

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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.