Home / 415,715.28-623,595.18-131,384.20

Finding the Fourth Proportional to 415,715.28, 623,595.18 and 131,384.20

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Solution

The fourth proportional to 415,715.28, 623,595.18 and 131,384.20 is: 197,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,715.28 : 623,595.18 = 131,384.20 : x
  2. Step 2: Convert to fraction form
    415,715.28/623,595.18 = 131,384.20/x
  3. Step 3: Cross multiply
    415,715.28x = 623,595.18 × 131,384.20
  4. Step 4: Simplify right side
    415,715.28x = 81,930,553,848.16
  5. Step 5: Solve for x
    x = 81,930,553,848.16/415,715.28
  6. Step 6: Final answer
    x = 197,083.34

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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.