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Finding the Fourth Proportional to 405,417.80, 559,477.86 and 224,139.80

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Solution

The fourth proportional to 405,417.80, 559,477.86 and 224,139.80 is: 309,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,417.80 : 559,477.86 = 224,139.80 : x
  2. Step 2: Convert to fraction form
    405,417.80/559,477.86 = 224,139.80/x
  3. Step 3: Cross multiply
    405,417.80x = 559,477.86 × 224,139.80
  4. Step 4: Simplify right side
    405,417.80x = 125,401,255,644.83
  5. Step 5: Solve for x
    x = 125,401,255,644.83/405,417.80
  6. Step 6: Final answer
    x = 309,313.64

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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.