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Finding the Fourth Proportional to 290,010.70, 406,948.10 and 290,010.70

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Solution

The fourth proportional to 290,010.70, 406,948.10 and 290,010.70 is: 406,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,010.70 : 406,948.10 = 290,010.70 : x
  2. Step 2: Convert to fraction form
    290,010.70/406,948.10 = 290,010.70/x
  3. Step 3: Cross multiply
    290,010.70x = 406,948.10 × 290,010.70
  4. Step 4: Simplify right side
    290,010.70x = 118,019,303,344.67
  5. Step 5: Solve for x
    x = 118,019,303,344.67/290,010.70
  6. Step 6: Final answer
    x = 406,948.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.