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Finding the Fourth Proportional to 305,903.70, 458,855.55 and 260,632.80

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Solution

The fourth proportional to 305,903.70, 458,855.55 and 260,632.80 is: 390,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,903.70 : 458,855.55 = 260,632.80 : x
  2. Step 2: Convert to fraction form
    305,903.70/458,855.55 = 260,632.80/x
  3. Step 3: Cross multiply
    305,903.70x = 458,855.55 × 260,632.80
  4. Step 4: Simplify right side
    305,903.70x = 119,592,806,792.04
  5. Step 5: Solve for x
    x = 119,592,806,792.04/305,903.70
  6. Step 6: Final answer
    x = 390,949.20

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Similar ratio
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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.