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Finding the Fourth Proportional to 611,359.60, 917,079.90 and 162,074.20

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Solution

The fourth proportional to 611,359.60, 917,079.90 and 162,074.20 is: 243,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,359.60 : 917,079.90 = 162,074.20 : x
  2. Step 2: Convert to fraction form
    611,359.60/917,079.90 = 162,074.20/x
  3. Step 3: Cross multiply
    611,359.60x = 917,079.90 × 162,074.20
  4. Step 4: Simplify right side
    611,359.60x = 148,634,991,128.58
  5. Step 5: Solve for x
    x = 148,634,991,128.58/611,359.60
  6. Step 6: Final answer
    x = 243,122.04

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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.