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Finding the Fourth Proportional to 215,688.60, 323,547.30 and 73,531.80

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Solution

The fourth proportional to 215,688.60, 323,547.30 and 73,531.80 is: 110,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,688.60 : 323,547.30 = 73,531.80 : x
  2. Step 2: Convert to fraction form
    215,688.60/323,547.30 = 73,531.80/x
  3. Step 3: Cross multiply
    215,688.60x = 323,547.30 × 73,531.80
  4. Step 4: Simplify right side
    215,688.60x = 23,791,015,354.14
  5. Step 5: Solve for x
    x = 23,791,015,354.14/215,688.60
  6. Step 6: Final answer
    x = 110,302.61

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1.5x scale

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.