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Finding the Fourth Proportional to 611,538.80, 917,308.20 and 162,258.80

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Solution

The fourth proportional to 611,538.80, 917,308.20 and 162,258.80 is: 243,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,538.80 : 917,308.20 = 162,258.80 : x
  2. Step 2: Convert to fraction form
    611,538.80/917,308.20 = 162,258.80/x
  3. Step 3: Cross multiply
    611,538.80x = 917,308.20 × 162,258.80
  4. Step 4: Simplify right side
    611,538.80x = 148,841,327,762.16
  5. Step 5: Solve for x
    x = 148,841,327,762.16/611,538.80
  6. Step 6: Final answer
    x = 243,388.20

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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.