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Finding the Fourth Proportional to 318,113.76, 438,988.32 and 174,873.84

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Solution

The fourth proportional to 318,113.76, 438,988.32 and 174,873.84 is: 241,321.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,113.76 : 438,988.32 = 174,873.84 : x
  2. Step 2: Convert to fraction form
    318,113.76/438,988.32 = 174,873.84/x
  3. Step 3: Cross multiply
    318,113.76x = 438,988.32 × 174,873.84
  4. Step 4: Simplify right side
    318,113.76x = 76,767,573,233.55
  5. Step 5: Solve for x
    x = 76,767,573,233.55/318,113.76
  6. Step 6: Final answer
    x = 241,321.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.