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Finding the Fourth Proportional to 384,830.40, 578,023.20 and 371,611.20

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Solution

The fourth proportional to 384,830.40, 578,023.20 and 371,611.20 is: 558,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,830.40 : 578,023.20 = 371,611.20 : x
  2. Step 2: Convert to fraction form
    384,830.40/578,023.20 = 371,611.20/x
  3. Step 3: Cross multiply
    384,830.40x = 578,023.20 × 371,611.20
  4. Step 4: Simplify right side
    384,830.40x = 214,799,894,979.84
  5. Step 5: Solve for x
    x = 214,799,894,979.84/384,830.40
  6. Step 6: Final answer
    x = 558,167.69

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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.