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Finding the Fourth Proportional to 292,975.80, 439,505.82 and 90,587.68

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Solution

The fourth proportional to 292,975.80, 439,505.82 and 90,587.68 is: 135,894.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,975.80 : 439,505.82 = 90,587.68 : x
  2. Step 2: Convert to fraction form
    292,975.80/439,505.82 = 90,587.68/x
  3. Step 3: Cross multiply
    292,975.80x = 439,505.82 × 90,587.68
  4. Step 4: Simplify right side
    292,975.80x = 39,813,812,580.30
  5. Step 5: Solve for x
    x = 39,813,812,580.30/292,975.80
  6. Step 6: Final answer
    x = 135,894.54

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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.