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Finding the Fourth Proportional to 461,238.56, 636,484.92 and 257,310.80

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Solution

The fourth proportional to 461,238.56, 636,484.92 and 257,310.80 is: 355,075.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,238.56 : 636,484.92 = 257,310.80 : x
  2. Step 2: Convert to fraction form
    461,238.56/636,484.92 = 257,310.80/x
  3. Step 3: Cross multiply
    461,238.56x = 636,484.92 × 257,310.80
  4. Step 4: Simplify right side
    461,238.56x = 163,774,443,953.14
  5. Step 5: Solve for x
    x = 163,774,443,953.14/461,238.56
  6. Step 6: Final answer
    x = 355,075.35

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1.5x scale

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.