Home / 369,140.18-509,418.21-218,235.86

Finding the Fourth Proportional to 369,140.18, 509,418.21 and 218,235.86

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Solution

The fourth proportional to 369,140.18, 509,418.21 and 218,235.86 is: 301,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,140.18 : 509,418.21 = 218,235.86 : x
  2. Step 2: Convert to fraction form
    369,140.18/509,418.21 = 218,235.86/x
  3. Step 3: Cross multiply
    369,140.18x = 509,418.21 × 218,235.86
  4. Step 4: Simplify right side
    369,140.18x = 111,173,321,159.01
  5. Step 5: Solve for x
    x = 111,173,321,159.01/369,140.18
  6. Step 6: Final answer
    x = 301,168.30

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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.