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Finding the Fourth Proportional to 461,430.60, 692,145.90 and 145,984.20

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Solution

The fourth proportional to 461,430.60, 692,145.90 and 145,984.20 is: 218,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,430.60 : 692,145.90 = 145,984.20 : x
  2. Step 2: Convert to fraction form
    461,430.60/692,145.90 = 145,984.20/x
  3. Step 3: Cross multiply
    461,430.60x = 692,145.90 × 145,984.20
  4. Step 4: Simplify right side
    461,430.60x = 101,042,365,494.78
  5. Step 5: Solve for x
    x = 101,042,365,494.78/461,430.60
  6. Step 6: Final answer
    x = 218,976.30

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Double scale
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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.