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Finding the Fourth Proportional to 555,318.15, 832,347.51 and 255,178.55

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Solution

The fourth proportional to 555,318.15, 832,347.51 and 255,178.55 is: 382,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,318.15 : 832,347.51 = 255,178.55 : x
  2. Step 2: Convert to fraction form
    555,318.15/832,347.51 = 255,178.55/x
  3. Step 3: Cross multiply
    555,318.15x = 832,347.51 × 255,178.55
  4. Step 4: Simplify right side
    555,318.15x = 212,397,226,536.17
  5. Step 5: Solve for x
    x = 212,397,226,536.17/555,318.15
  6. Step 6: Final answer
    x = 382,478.45

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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.