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Finding the Fourth Proportional to 507,647.70, 761,471.55 and 192,114.90

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Solution

The fourth proportional to 507,647.70, 761,471.55 and 192,114.90 is: 288,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,647.70 : 761,471.55 = 192,114.90 : x
  2. Step 2: Convert to fraction form
    507,647.70/761,471.55 = 192,114.90/x
  3. Step 3: Cross multiply
    507,647.70x = 761,471.55 × 192,114.90
  4. Step 4: Simplify right side
    507,647.70x = 146,290,030,681.10
  5. Step 5: Solve for x
    x = 146,290,030,681.10/507,647.70
  6. Step 6: Final answer
    x = 288,172.35

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Double scale
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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.