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Finding the Fourth Proportional to 376,570.36, 520,004.64 and 280,910.98

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Solution

The fourth proportional to 376,570.36, 520,004.64 and 280,910.98 is: 387,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,570.36 : 520,004.64 = 280,910.98 : x
  2. Step 2: Convert to fraction form
    376,570.36/520,004.64 = 280,910.98/x
  3. Step 3: Cross multiply
    376,570.36x = 520,004.64 × 280,910.98
  4. Step 4: Simplify right side
    376,570.36x = 146,075,013,026.95
  5. Step 5: Solve for x
    x = 146,075,013,026.95/376,570.36
  6. Step 6: Final answer
    x = 387,908.95

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1.5x scale

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.