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Finding the Fourth Proportional to 357,763.29, 536,639.45 and 91,521.56

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Solution

The fourth proportional to 357,763.29, 536,639.45 and 91,521.56 is: 137,280.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,763.29 : 536,639.45 = 91,521.56 : x
  2. Step 2: Convert to fraction form
    357,763.29/536,639.45 = 91,521.56/x
  3. Step 3: Cross multiply
    357,763.29x = 536,639.45 × 91,521.56
  4. Step 4: Simplify right side
    357,763.29x = 49,114,076,480.74
  5. Step 5: Solve for x
    x = 49,114,076,480.74/357,763.29
  6. Step 6: Final answer
    x = 137,280.93

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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.