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Finding the Fourth Proportional to 478,571.49, 717,871.16 and 178,994.91

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Solution

The fourth proportional to 478,571.49, 717,871.16 and 178,994.91 is: 268,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,571.49 : 717,871.16 = 178,994.91 : x
  2. Step 2: Convert to fraction form
    478,571.49/717,871.16 = 178,994.91/x
  3. Step 3: Cross multiply
    478,571.49x = 717,871.16 × 178,994.91
  4. Step 4: Simplify right side
    478,571.49x = 128,495,285,808.45
  5. Step 5: Solve for x
    x = 128,495,285,808.45/478,571.49
  6. Step 6: Final answer
    x = 268,497.58

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1.5x scale

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.