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Finding the Fourth Proportional to 555,209.20, 832,689.12 and 255,401.80

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Solution

The fourth proportional to 555,209.20, 832,689.12 and 255,401.80 is: 383,045.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,209.20 : 832,689.12 = 255,401.80 : x
  2. Step 2: Convert to fraction form
    555,209.20/832,689.12 = 255,401.80/x
  3. Step 3: Cross multiply
    555,209.20x = 832,689.12 × 255,401.80
  4. Step 4: Simplify right side
    555,209.20x = 212,670,300,088.42
  5. Step 5: Solve for x
    x = 212,670,300,088.42/555,209.20
  6. Step 6: Final answer
    x = 383,045.35

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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.