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Finding the Fourth Proportional to 353,669.20, 530,503.80 and 283,685.20

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Solution

The fourth proportional to 353,669.20, 530,503.80 and 283,685.20 is: 425,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,669.20 : 530,503.80 = 283,685.20 : x
  2. Step 2: Convert to fraction form
    353,669.20/530,503.80 = 283,685.20/x
  3. Step 3: Cross multiply
    353,669.20x = 530,503.80 × 283,685.20
  4. Step 4: Simplify right side
    353,669.20x = 150,496,076,603.76
  5. Step 5: Solve for x
    x = 150,496,076,603.76/353,669.20
  6. Step 6: Final answer
    x = 425,527.80

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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.