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Finding the Fourth Proportional to 608,437.60, 912,699.60 and 187,712.80

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Solution

The fourth proportional to 608,437.60, 912,699.60 and 187,712.80 is: 281,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,437.60 : 912,699.60 = 187,712.80 : x
  2. Step 2: Convert to fraction form
    608,437.60/912,699.60 = 187,712.80/x
  3. Step 3: Cross multiply
    608,437.60x = 912,699.60 × 187,712.80
  4. Step 4: Simplify right side
    608,437.60x = 171,325,397,474.88
  5. Step 5: Solve for x
    x = 171,325,397,474.88/608,437.60
  6. Step 6: Final answer
    x = 281,582.53

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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.