Home / 208,931.28-288,562.56-140,830.80

Finding the Fourth Proportional to 208,931.28, 288,562.56 and 140,830.80

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Solution

The fourth proportional to 208,931.28, 288,562.56 and 140,830.80 is: 194,506.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,931.28 : 288,562.56 = 140,830.80 : x
  2. Step 2: Convert to fraction form
    208,931.28/288,562.56 = 140,830.80/x
  3. Step 3: Cross multiply
    208,931.28x = 288,562.56 × 140,830.80
  4. Step 4: Simplify right side
    208,931.28x = 40,638,496,174.85
  5. Step 5: Solve for x
    x = 40,638,496,174.85/208,931.28
  6. Step 6: Final answer
    x = 194,506.52

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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.