Home / 218,973.93-302,184.24-128,311.86

Finding the Fourth Proportional to 218,973.93, 302,184.24 and 128,311.86

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Solution

The fourth proportional to 218,973.93, 302,184.24 and 128,311.86 is: 177,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,973.93 : 302,184.24 = 128,311.86 : x
  2. Step 2: Convert to fraction form
    218,973.93/302,184.24 = 128,311.86/x
  3. Step 3: Cross multiply
    218,973.93x = 302,184.24 × 128,311.86
  4. Step 4: Simplify right side
    218,973.93x = 38,773,821,897.09
  5. Step 5: Solve for x
    x = 38,773,821,897.09/218,973.93
  6. Step 6: Final answer
    x = 177,070.49

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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.