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Finding the Fourth Proportional to 851,355.72, 1,277,164.80 and 290,259

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Solution

The fourth proportional to 851,355.72, 1,277,164.80 and 290,259 is: 435,433.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,355.72 : 1,277,164.80 = 290,259 : x
  2. Step 2: Convert to fraction form
    851,355.72/1,277,164.80 = 290,259/x
  3. Step 3: Cross multiply
    851,355.72x = 1,277,164.80 × 290,259
  4. Step 4: Simplify right side
    851,355.72x = 370,708,577,683.20
  5. Step 5: Solve for x
    x = 370,708,577,683.20/851,355.72
  6. Step 6: Final answer
    x = 435,433.24

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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.