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Finding the Fourth Proportional to 545,407.20, 818,110.80 and 146,109.60

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Solution

The fourth proportional to 545,407.20, 818,110.80 and 146,109.60 is: 219,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,407.20 : 818,110.80 = 146,109.60 : x
  2. Step 2: Convert to fraction form
    545,407.20/818,110.80 = 146,109.60/x
  3. Step 3: Cross multiply
    545,407.20x = 818,110.80 × 146,109.60
  4. Step 4: Simplify right side
    545,407.20x = 119,533,841,743.68
  5. Step 5: Solve for x
    x = 119,533,841,743.68/545,407.20
  6. Step 6: Final answer
    x = 219,164.40

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Similar ratio
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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.