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Finding the Fourth Proportional to 318,154.86, 439,056.71 and 174,915.95

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Solution

The fourth proportional to 318,154.86, 439,056.71 and 174,915.95 is: 241,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,154.86 : 439,056.71 = 174,915.95 : x
  2. Step 2: Convert to fraction form
    318,154.86/439,056.71 = 174,915.95/x
  3. Step 3: Cross multiply
    318,154.86x = 439,056.71 × 174,915.95
  4. Step 4: Simplify right side
    318,154.86x = 76,798,018,463.66
  5. Step 5: Solve for x
    x = 76,798,018,463.66/318,154.86
  6. Step 6: Final answer
    x = 241,385.65

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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.