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Finding the Fourth Proportional to 555,330.18, 765,965.91 and 340,555.86

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Solution

The fourth proportional to 555,330.18, 765,965.91 and 340,555.86 is: 469,728.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,330.18 : 765,965.91 = 340,555.86 : x
  2. Step 2: Convert to fraction form
    555,330.18/765,965.91 = 340,555.86/x
  3. Step 3: Cross multiply
    555,330.18x = 765,965.91 × 340,555.86
  4. Step 4: Simplify right side
    555,330.18x = 260,854,179,210.73
  5. Step 5: Solve for x
    x = 260,854,179,210.73/555,330.18
  6. Step 6: Final answer
    x = 469,728.08

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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.