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Finding the Fourth Proportional to 260,951,762.79, 360,114,856.02 and 153,665,765.91

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Solution

The fourth proportional to 260,951,762.79, 360,114,856.02 and 153,665,765.91 is: 212,059,595.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,951,762.79 : 360,114,856.02 = 153,665,765.91 : x
  2. Step 2: Convert to fraction form
    260,951,762.79/360,114,856.02 = 153,665,765.91/x
  3. Step 3: Cross multiply
    260,951,762.79x = 360,114,856.02 × 153,665,765.91
  4. Step 4: Simplify right side
    260,951,762.79x = 55,337,325,165,882,672
  5. Step 5: Solve for x
    x = 55,337,325,165,882,672/260,951,762.79
  6. Step 6: Final answer
    x = 212,059,595.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.