Home / 385,839.90-578,565.45-228,116.70

Finding the Fourth Proportional to 385,839.90, 578,565.45 and 228,116.70

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Solution

The fourth proportional to 385,839.90, 578,565.45 and 228,116.70 is: 342,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,839.90 : 578,565.45 = 228,116.70 : x
  2. Step 2: Convert to fraction form
    385,839.90/578,565.45 = 228,116.70/x
  3. Step 3: Cross multiply
    385,839.90x = 578,565.45 × 228,116.70
  4. Step 4: Simplify right side
    385,839.90x = 131,980,441,188.02
  5. Step 5: Solve for x
    x = 131,980,441,188.02/385,839.90
  6. Step 6: Final answer
    x = 342,060.12

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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.