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Finding the Fourth Proportional to 215,562.56, 297,482.34 and 129,492.58

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Solution

The fourth proportional to 215,562.56, 297,482.34 and 129,492.58 is: 178,703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,562.56 : 297,482.34 = 129,492.58 : x
  2. Step 2: Convert to fraction form
    215,562.56/297,482.34 = 129,492.58/x
  3. Step 3: Cross multiply
    215,562.56x = 297,482.34 × 129,492.58
  4. Step 4: Simplify right side
    215,562.56x = 38,521,755,711.04
  5. Step 5: Solve for x
    x = 38,521,755,711.04/215,562.56
  6. Step 6: Final answer
    x = 178,703.37

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1.5x scale

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.