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Finding the Fourth Proportional to 470,231.20, 705,346.80 and 154,698.40

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Solution

The fourth proportional to 470,231.20, 705,346.80 and 154,698.40 is: 232,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,231.20 : 705,346.80 = 154,698.40 : x
  2. Step 2: Convert to fraction form
    470,231.20/705,346.80 = 154,698.40/x
  3. Step 3: Cross multiply
    470,231.20x = 705,346.80 × 154,698.40
  4. Step 4: Simplify right side
    470,231.20x = 109,116,021,405.12
  5. Step 5: Solve for x
    x = 109,116,021,405.12/470,231.20
  6. Step 6: Final answer
    x = 232,047.60

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Similar ratio
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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.