Home / 285,178.95-427,746.15-74,811.42

Finding the Fourth Proportional to 285,178.95, 427,746.15 and 74,811.42

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Solution

The fourth proportional to 285,178.95, 427,746.15 and 74,811.42 is: 112,211.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,178.95 : 427,746.15 = 74,811.42 : x
  2. Step 2: Convert to fraction form
    285,178.95/427,746.15 = 74,811.42/x
  3. Step 3: Cross multiply
    285,178.95x = 427,746.15 × 74,811.42
  4. Step 4: Simplify right side
    285,178.95x = 32,000,296,881.03
  5. Step 5: Solve for x
    x = 32,000,296,881.03/285,178.95
  6. Step 6: Final answer
    x = 112,211.29

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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.