Home / 218,688.48-328,032-68,941.86

Finding the Fourth Proportional to 218,688.48, 328,032 and 68,941.86

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Solution

The fourth proportional to 218,688.48, 328,032 and 68,941.86 is: 103,412.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,688.48 : 328,032 = 68,941.86 : x
  2. Step 2: Convert to fraction form
    218,688.48/328,032 = 68,941.86/x
  3. Step 3: Cross multiply
    218,688.48x = 328,032 × 68,941.86
  4. Step 4: Simplify right side
    218,688.48x = 22,615,136,219.52
  5. Step 5: Solve for x
    x = 22,615,136,219.52/218,688.48
  6. Step 6: Final answer
    x = 103,412.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.