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Finding the Fourth Proportional to 313,477.61, 432,731.52 and 211,641

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Solution

The fourth proportional to 313,477.61, 432,731.52 and 211,641 is: 292,153.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,477.61 : 432,731.52 = 211,641 : x
  2. Step 2: Convert to fraction form
    313,477.61/432,731.52 = 211,641/x
  3. Step 3: Cross multiply
    313,477.61x = 432,731.52 × 211,641
  4. Step 4: Simplify right side
    313,477.61x = 91,583,731,624.32
  5. Step 5: Solve for x
    x = 91,583,731,624.32/313,477.61
  6. Step 6: Final answer
    x = 292,153.99

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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.