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Finding the Fourth Proportional to 611,350.60, 917,066.40 and 162,065.20

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Solution

The fourth proportional to 611,350.60, 917,066.40 and 162,065.20 is: 243,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,350.60 : 917,066.40 = 162,065.20 : x
  2. Step 2: Convert to fraction form
    611,350.60/917,066.40 = 162,065.20/x
  3. Step 3: Cross multiply
    611,350.60x = 917,066.40 × 162,065.20
  4. Step 4: Simplify right side
    611,350.60x = 148,624,549,529.28
  5. Step 5: Solve for x
    x = 148,624,549,529.28/611,350.60
  6. Step 6: Final answer
    x = 243,108.54

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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.