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Finding the Fourth Proportional to 290,431.03, 400,747.80 and 181,522.53

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Solution

The fourth proportional to 290,431.03, 400,747.80 and 181,522.53 is: 250,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,431.03 : 400,747.80 = 181,522.53 : x
  2. Step 2: Convert to fraction form
    290,431.03/400,747.80 = 181,522.53/x
  3. Step 3: Cross multiply
    290,431.03x = 400,747.80 × 181,522.53
  4. Step 4: Simplify right side
    290,431.03x = 72,744,754,547.93
  5. Step 5: Solve for x
    x = 72,744,754,547.93/290,431.03
  6. Step 6: Final answer
    x = 250,471.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.