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Finding the Fourth Proportional to 470,136.60, 705,132.90 and 154,594.20

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Solution

The fourth proportional to 470,136.60, 705,132.90 and 154,594.20 is: 231,867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,136.60 : 705,132.90 = 154,594.20 : x
  2. Step 2: Convert to fraction form
    470,136.60/705,132.90 = 154,594.20/x
  3. Step 3: Cross multiply
    470,136.60x = 705,132.90 × 154,594.20
  4. Step 4: Simplify right side
    470,136.60x = 109,009,456,569.18
  5. Step 5: Solve for x
    x = 109,009,456,569.18/470,136.60
  6. Step 6: Final answer
    x = 231,867.62

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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.