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Finding the Fourth Proportional to 483,315.40, 724,281.90 and 355,961.80

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Solution

The fourth proportional to 483,315.40, 724,281.90 and 355,961.80 is: 533,433.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,315.40 : 724,281.90 = 355,961.80 : x
  2. Step 2: Convert to fraction form
    483,315.40/724,281.90 = 355,961.80/x
  3. Step 3: Cross multiply
    483,315.40x = 724,281.90 × 355,961.80
  4. Step 4: Simplify right side
    483,315.40x = 257,816,688,831.42
  5. Step 5: Solve for x
    x = 257,816,688,831.42/483,315.40
  6. Step 6: Final answer
    x = 533,433.63

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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.