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Finding the Fourth Proportional to 561,528.90, 842,402.70 and 162,182.70

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Solution

The fourth proportional to 561,528.90, 842,402.70 and 162,182.70 is: 243,305.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,528.90 : 842,402.70 = 162,182.70 : x
  2. Step 2: Convert to fraction form
    561,528.90/842,402.70 = 162,182.70/x
  3. Step 3: Cross multiply
    561,528.90x = 842,402.70 × 162,182.70
  4. Step 4: Simplify right side
    561,528.90x = 136,623,144,373.29
  5. Step 5: Solve for x
    x = 136,623,144,373.29/561,528.90
  6. Step 6: Final answer
    x = 243,305.63

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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.