Home / 253,003,383.42-379,513,475.73-87,005,259.78

Finding the Fourth Proportional to 253,003,383.42, 379,513,475.73 and 87,005,259.78

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Solution

The fourth proportional to 253,003,383.42, 379,513,475.73 and 87,005,259.78 is: 130,510,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,003,383.42 : 379,513,475.73 = 87,005,259.78 : x
  2. Step 2: Convert to fraction form
    253,003,383.42/379,513,475.73 = 87,005,259.78/x
  3. Step 3: Cross multiply
    253,003,383.42x = 379,513,475.73 × 87,005,259.78
  4. Step 4: Simplify right side
    253,003,383.42x = 33,019,668,545,899,376
  5. Step 5: Solve for x
    x = 33,019,668,545,899,376/253,003,383.42
  6. Step 6: Final answer
    x = 130,510,778.55

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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.