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Finding the Fourth Proportional to 307,856.98, 461,752.98 and 145,712.20

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Solution

The fourth proportional to 307,856.98, 461,752.98 and 145,712.20 is: 218,552.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,856.98 : 461,752.98 = 145,712.20 : x
  2. Step 2: Convert to fraction form
    307,856.98/461,752.98 = 145,712.20/x
  3. Step 3: Cross multiply
    307,856.98x = 461,752.98 × 145,712.20
  4. Step 4: Simplify right side
    307,856.98x = 67,283,042,572.36
  5. Step 5: Solve for x
    x = 67,283,042,572.36/307,856.98
  6. Step 6: Final answer
    x = 218,552.92

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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.