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Finding the Fourth Proportional to 405,539.50, 559,458.49 and 262,345.72

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Solution

The fourth proportional to 405,539.50, 559,458.49 and 262,345.72 is: 361,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,539.50 : 559,458.49 = 262,345.72 : x
  2. Step 2: Convert to fraction form
    405,539.50/559,458.49 = 262,345.72/x
  3. Step 3: Cross multiply
    405,539.50x = 559,458.49 × 262,345.72
  4. Step 4: Simplify right side
    405,539.50x = 146,771,540,369.16
  5. Step 5: Solve for x
    x = 146,771,540,369.16/405,539.50
  6. Step 6: Final answer
    x = 361,916.76

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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.