Home / 405,312.03-559,332.80-221,550.85

Finding the Fourth Proportional to 405,312.03, 559,332.80 and 221,550.85

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Solution

The fourth proportional to 405,312.03, 559,332.80 and 221,550.85 is: 305,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,312.03 : 559,332.80 = 221,550.85 : x
  2. Step 2: Convert to fraction form
    405,312.03/559,332.80 = 221,550.85/x
  3. Step 3: Cross multiply
    405,312.03x = 559,332.80 × 221,550.85
  4. Step 4: Simplify right side
    405,312.03x = 123,920,657,272.88
  5. Step 5: Solve for x
    x = 123,920,657,272.88/405,312.03
  6. Step 6: Final answer
    x = 305,741.37

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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.