Home / 390,934.72-586,412.33-134,764.58

Finding the Fourth Proportional to 390,934.72, 586,412.33 and 134,764.58

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Solution

The fourth proportional to 390,934.72, 586,412.33 and 134,764.58 is: 202,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,934.72 : 586,412.33 = 134,764.58 : x
  2. Step 2: Convert to fraction form
    390,934.72/586,412.33 = 134,764.58/x
  3. Step 3: Cross multiply
    390,934.72x = 586,412.33 × 134,764.58
  4. Step 4: Simplify right side
    390,934.72x = 79,027,611,359.27
  5. Step 5: Solve for x
    x = 79,027,611,359.27/390,934.72
  6. Step 6: Final answer
    x = 202,150.40

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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.