Home / 385,883.40-578,630.70-228,160.20

Finding the Fourth Proportional to 385,883.40, 578,630.70 and 228,160.20

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Solution

The fourth proportional to 385,883.40, 578,630.70 and 228,160.20 is: 342,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,883.40 : 578,630.70 = 228,160.20 : x
  2. Step 2: Convert to fraction form
    385,883.40/578,630.70 = 228,160.20/x
  3. Step 3: Cross multiply
    385,883.40x = 578,630.70 × 228,160.20
  4. Step 4: Simplify right side
    385,883.40x = 132,020,496,238.14
  5. Step 5: Solve for x
    x = 132,020,496,238.14/385,883.40
  6. Step 6: Final answer
    x = 342,125.36

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1.5x scale

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.