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Finding the Fourth Proportional to 545,326.68, 752,355.98 and 315,758.64

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Solution

The fourth proportional to 545,326.68, 752,355.98 and 315,758.64 is: 435,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,326.68 : 752,355.98 = 315,758.64 : x
  2. Step 2: Convert to fraction form
    545,326.68/752,355.98 = 315,758.64/x
  3. Step 3: Cross multiply
    545,326.68x = 752,355.98 × 315,758.64
  4. Step 4: Simplify right side
    545,326.68x = 237,562,901,040.67
  5. Step 5: Solve for x
    x = 237,562,901,040.67/545,326.68
  6. Step 6: Final answer
    x = 435,634.11

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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.