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Finding the Fourth Proportional to 525,194.28, 724,856.40 and 304,398.72

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Solution

The fourth proportional to 525,194.28, 724,856.40 and 304,398.72 is: 420,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,194.28 : 724,856.40 = 304,398.72 : x
  2. Step 2: Convert to fraction form
    525,194.28/724,856.40 = 304,398.72/x
  3. Step 3: Cross multiply
    525,194.28x = 724,856.40 × 304,398.72
  4. Step 4: Simplify right side
    525,194.28x = 220,645,360,343.81
  5. Step 5: Solve for x
    x = 220,645,360,343.81/525,194.28
  6. Step 6: Final answer
    x = 420,121.41

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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.