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Finding the Fourth Proportional to 561,411.74, 842,124.30 and 156,579.35

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Solution

The fourth proportional to 561,411.74, 842,124.30 and 156,579.35 is: 234,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,411.74 : 842,124.30 = 156,579.35 : x
  2. Step 2: Convert to fraction form
    561,411.74/842,124.30 = 156,579.35/x
  3. Step 3: Cross multiply
    561,411.74x = 842,124.30 × 156,579.35
  4. Step 4: Simplify right side
    561,411.74x = 131,859,270,715.41
  5. Step 5: Solve for x
    x = 131,859,270,715.41/561,411.74
  6. Step 6: Final answer
    x = 234,870.88

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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.