Home / 215,715.76-297,600-143,152.80

Finding the Fourth Proportional to 215,715.76, 297,600 and 143,152.80

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Solution

The fourth proportional to 215,715.76, 297,600 and 143,152.80 is: 197,492.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,715.76 : 297,600 = 143,152.80 : x
  2. Step 2: Convert to fraction form
    215,715.76/297,600 = 143,152.80/x
  3. Step 3: Cross multiply
    215,715.76x = 297,600 × 143,152.80
  4. Step 4: Simplify right side
    215,715.76x = 42,602,273,280
  5. Step 5: Solve for x
    x = 42,602,273,280/215,715.76
  6. Step 6: Final answer
    x = 197,492.63

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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.