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Finding the Fourth Proportional to 476,386.65, 657,393.60 and 261,531.69

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Solution

The fourth proportional to 476,386.65, 657,393.60 and 261,531.69 is: 360,902.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,386.65 : 657,393.60 = 261,531.69 : x
  2. Step 2: Convert to fraction form
    476,386.65/657,393.60 = 261,531.69/x
  3. Step 3: Cross multiply
    476,386.65x = 657,393.60 × 261,531.69
  4. Step 4: Simplify right side
    476,386.65x = 171,929,257,718.70
  5. Step 5: Solve for x
    x = 171,929,257,718.70/476,386.65
  6. Step 6: Final answer
    x = 360,902.76

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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.