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Finding the Fourth Proportional to 575,639.30, 863,381.18 and 154,940.42

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Solution

The fourth proportional to 575,639.30, 863,381.18 and 154,940.42 is: 232,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,639.30 : 863,381.18 = 154,940.42 : x
  2. Step 2: Convert to fraction form
    575,639.30/863,381.18 = 154,940.42/x
  3. Step 3: Cross multiply
    575,639.30x = 863,381.18 × 154,940.42
  4. Step 4: Simplify right side
    575,639.30x = 133,772,642,649.30
  5. Step 5: Solve for x
    x = 133,772,642,649.30/575,639.30
  6. Step 6: Final answer
    x = 232,389.70

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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.