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Finding the Fourth Proportional to 507,649.20, 761,473.80 and 192,116.40

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Solution

The fourth proportional to 507,649.20, 761,473.80 and 192,116.40 is: 288,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,649.20 : 761,473.80 = 192,116.40 : x
  2. Step 2: Convert to fraction form
    507,649.20/761,473.80 = 192,116.40/x
  3. Step 3: Cross multiply
    507,649.20x = 761,473.80 × 192,116.40
  4. Step 4: Simplify right side
    507,649.20x = 146,291,605,150.32
  5. Step 5: Solve for x
    x = 146,291,605,150.32/507,649.20
  6. Step 6: Final answer
    x = 288,174.60

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Similar ratio
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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.