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Finding the Fourth Proportional to 608,389.92, 912,740.40 and 253,285.92

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Solution

The fourth proportional to 608,389.92, 912,740.40 and 253,285.92 is: 379,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,389.92 : 912,740.40 = 253,285.92 : x
  2. Step 2: Convert to fraction form
    608,389.92/912,740.40 = 253,285.92/x
  3. Step 3: Cross multiply
    608,389.92x = 912,740.40 × 253,285.92
  4. Step 4: Simplify right side
    608,389.92x = 231,184,291,935.17
  5. Step 5: Solve for x
    x = 231,184,291,935.17/608,389.92
  6. Step 6: Final answer
    x = 379,993.63

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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.