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Finding the Fourth Proportional to 515,545.10, 774,010.20 and 302,531.30

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Solution

The fourth proportional to 515,545.10, 774,010.20 and 302,531.30 is: 454,203.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,545.10 : 774,010.20 = 302,531.30 : x
  2. Step 2: Convert to fraction form
    515,545.10/774,010.20 = 302,531.30/x
  3. Step 3: Cross multiply
    515,545.10x = 774,010.20 × 302,531.30
  4. Step 4: Simplify right side
    515,545.10x = 234,162,312,019.26
  5. Step 5: Solve for x
    x = 234,162,312,019.26/515,545.10
  6. Step 6: Final answer
    x = 454,203.35

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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.