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Finding the Fourth Proportional to 243,595.15, 365,384.52 and 85,819.50

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Solution

The fourth proportional to 243,595.15, 365,384.52 and 85,819.50 is: 128,726.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,595.15 : 365,384.52 = 85,819.50 : x
  2. Step 2: Convert to fraction form
    243,595.15/365,384.52 = 85,819.50/x
  3. Step 3: Cross multiply
    243,595.15x = 365,384.52 × 85,819.50
  4. Step 4: Simplify right side
    243,595.15x = 31,357,116,814.14
  5. Step 5: Solve for x
    x = 31,357,116,814.14/243,595.15
  6. Step 6: Final answer
    x = 128,726.36

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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.