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Finding the Fourth Proportional to 292,975.81, 439,505.81 and 90,587.68

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Solution

The fourth proportional to 292,975.81, 439,505.81 and 90,587.68 is: 135,894.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,975.81 : 439,505.81 = 90,587.68 : x
  2. Step 2: Convert to fraction form
    292,975.81/439,505.81 = 90,587.68/x
  3. Step 3: Cross multiply
    292,975.81x = 439,505.81 × 90,587.68
  4. Step 4: Simplify right side
    292,975.81x = 39,813,811,207.87
  5. Step 5: Solve for x
    x = 39,813,811,207.87/292,975.81
  6. Step 6: Final answer
    x = 135,894.53

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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.