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Finding the Fourth Proportional to 209,312.99, 288,848.63 and 113,818.85

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Solution

The fourth proportional to 209,312.99, 288,848.63 and 113,818.85 is: 157,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,312.99 : 288,848.63 = 113,818.85 : x
  2. Step 2: Convert to fraction form
    209,312.99/288,848.63 = 113,818.85/x
  3. Step 3: Cross multiply
    209,312.99x = 288,848.63 × 113,818.85
  4. Step 4: Simplify right side
    209,312.99x = 32,876,418,890.68
  5. Step 5: Solve for x
    x = 32,876,418,890.68/209,312.99
  6. Step 6: Final answer
    x = 157,068.22

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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.