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Finding the Fourth Proportional to 358,853.72, 538,385.85 and 106,140.88

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Solution

The fourth proportional to 358,853.72, 538,385.85 and 106,140.88 is: 159,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,853.72 : 538,385.85 = 106,140.88 : x
  2. Step 2: Convert to fraction form
    358,853.72/538,385.85 = 106,140.88/x
  3. Step 3: Cross multiply
    358,853.72x = 538,385.85 × 106,140.88
  4. Step 4: Simplify right side
    358,853.72x = 57,144,744,675.91
  5. Step 5: Solve for x
    x = 57,144,744,675.91/358,853.72
  6. Step 6: Final answer
    x = 159,242.45

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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.