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Finding the Fourth Proportional to 376,928.40, 520,155.16 and 207,158.88

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Solution

The fourth proportional to 376,928.40, 520,155.16 and 207,158.88 is: 285,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,928.40 : 520,155.16 = 207,158.88 : x
  2. Step 2: Convert to fraction form
    376,928.40/520,155.16 = 207,158.88/x
  3. Step 3: Cross multiply
    376,928.40x = 520,155.16 × 207,158.88
  4. Step 4: Simplify right side
    376,928.40x = 107,754,760,371.82
  5. Step 5: Solve for x
    x = 107,754,760,371.82/376,928.40
  6. Step 6: Final answer
    x = 285,875.94

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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.