Home / 253,003,358.74-379,513,439.04-87,005,235.19

Finding the Fourth Proportional to 253,003,358.74, 379,513,439.04 and 87,005,235.19

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Solution

The fourth proportional to 253,003,358.74, 379,513,439.04 and 87,005,235.19 is: 130,510,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,003,358.74 : 379,513,439.04 = 87,005,235.19 : x
  2. Step 2: Convert to fraction form
    253,003,358.74/379,513,439.04 = 87,005,235.19/x
  3. Step 3: Cross multiply
    253,003,358.74x = 379,513,439.04 × 87,005,235.19
  4. Step 4: Simplify right side
    253,003,358.74x = 33,019,656,021,440,928
  5. Step 5: Solve for x
    x = 33,019,656,021,440,928/253,003,358.74
  6. Step 6: Final answer
    x = 130,510,741.78

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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.