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Finding the Fourth Proportional to 525,607.68, 788,616.05 and 210,154.80

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Solution

The fourth proportional to 525,607.68, 788,616.05 and 210,154.80 is: 315,313.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,607.68 : 788,616.05 = 210,154.80 : x
  2. Step 2: Convert to fraction form
    525,607.68/788,616.05 = 210,154.80/x
  3. Step 3: Cross multiply
    525,607.68x = 788,616.05 × 210,154.80
  4. Step 4: Simplify right side
    525,607.68x = 165,731,451,353.20
  5. Step 5: Solve for x
    x = 165,731,451,353.20/525,607.68
  6. Step 6: Final answer
    x = 315,313.98

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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.