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Finding the Fourth Proportional to 375,638.40, 563,550 and 109,401.40

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Solution

The fourth proportional to 375,638.40, 563,550 and 109,401.40 is: 164,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,638.40 : 563,550 = 109,401.40 : x
  2. Step 2: Convert to fraction form
    375,638.40/563,550 = 109,401.40/x
  3. Step 3: Cross multiply
    375,638.40x = 563,550 × 109,401.40
  4. Step 4: Simplify right side
    375,638.40x = 61,653,158,970
  5. Step 5: Solve for x
    x = 61,653,158,970/375,638.40
  6. Step 6: Final answer
    x = 164,129.01

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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.