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Finding the Fourth Proportional to 356,686.63, 492,289.98 and 270,929.50

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Solution

The fourth proportional to 356,686.63, 492,289.98 and 270,929.50 is: 373,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,686.63 : 492,289.98 = 270,929.50 : x
  2. Step 2: Convert to fraction form
    356,686.63/492,289.98 = 270,929.50/x
  3. Step 3: Cross multiply
    356,686.63x = 492,289.98 × 270,929.50
  4. Step 4: Simplify right side
    356,686.63x = 133,375,878,136.41
  5. Step 5: Solve for x
    x = 133,375,878,136.41/356,686.63
  6. Step 6: Final answer
    x = 373,930.13

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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.