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Finding the Fourth Proportional to 342,003.55, 479,985.95 and 342,003.55

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Solution

The fourth proportional to 342,003.55, 479,985.95 and 342,003.55 is: 479,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,003.55 : 479,985.95 = 342,003.55 : x
  2. Step 2: Convert to fraction form
    342,003.55/479,985.95 = 342,003.55/x
  3. Step 3: Cross multiply
    342,003.55x = 479,985.95 × 342,003.55
  4. Step 4: Simplify right side
    342,003.55x = 164,156,898,850.12
  5. Step 5: Solve for x
    x = 164,156,898,850.12/342,003.55
  6. Step 6: Final answer
    x = 479,985.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.