Home / 253,003,384.42-379,513,477.23-87,005,260.78

Finding the Fourth Proportional to 253,003,384.42, 379,513,477.23 and 87,005,260.78

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Solution

The fourth proportional to 253,003,384.42, 379,513,477.23 and 87,005,260.78 is: 130,510,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,003,384.42 : 379,513,477.23 = 87,005,260.78 : x
  2. Step 2: Convert to fraction form
    253,003,384.42/379,513,477.23 = 87,005,260.78/x
  3. Step 3: Cross multiply
    253,003,384.42x = 379,513,477.23 × 87,005,260.78
  4. Step 4: Simplify right side
    253,003,384.42x = 33,019,669,055,920,744
  5. Step 5: Solve for x
    x = 33,019,669,055,920,744/253,003,384.42
  6. Step 6: Final answer
    x = 130,510,780.05

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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.