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Finding the Fourth Proportional to 318,652.37, 477,978.57 and 118,988.35

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Solution

The fourth proportional to 318,652.37, 477,978.57 and 118,988.35 is: 178,482.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,652.37 : 477,978.57 = 118,988.35 : x
  2. Step 2: Convert to fraction form
    318,652.37/477,978.57 = 118,988.35/x
  3. Step 3: Cross multiply
    318,652.37x = 477,978.57 × 118,988.35
  4. Step 4: Simplify right side
    318,652.37x = 56,873,880,184.71
  5. Step 5: Solve for x
    x = 56,873,880,184.71/318,652.37
  6. Step 6: Final answer
    x = 178,482.53

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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.