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Finding the Fourth Proportional to 608,381.42, 912,670.54 and 253,431.32

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Solution

The fourth proportional to 608,381.42, 912,670.54 and 253,431.32 is: 380,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,381.42 : 912,670.54 = 253,431.32 : x
  2. Step 2: Convert to fraction form
    608,381.42/912,670.54 = 253,431.32/x
  3. Step 3: Cross multiply
    608,381.42x = 912,670.54 × 253,431.32
  4. Step 4: Simplify right side
    608,381.42x = 231,299,294,480.38
  5. Step 5: Solve for x
    x = 231,299,294,480.38/608,381.42
  6. Step 6: Final answer
    x = 380,187.97

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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.