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Finding the Fourth Proportional to 376,397.46, 518,711.58 and 369,479.88

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Solution

The fourth proportional to 376,397.46, 518,711.58 and 369,479.88 is: 509,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,397.46 : 518,711.58 = 369,479.88 : x
  2. Step 2: Convert to fraction form
    376,397.46/518,711.58 = 369,479.88/x
  3. Step 3: Cross multiply
    376,397.46x = 518,711.58 × 369,479.88
  4. Step 4: Simplify right side
    376,397.46x = 191,653,492,333.01
  5. Step 5: Solve for x
    x = 191,653,492,333.01/376,397.46
  6. Step 6: Final answer
    x = 509,178.50

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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.