Home / 278,996.58-385,018.02-151,674.90

Finding the Fourth Proportional to 278,996.58, 385,018.02 and 151,674.90

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Solution

The fourth proportional to 278,996.58, 385,018.02 and 151,674.90 is: 209,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,996.58 : 385,018.02 = 151,674.90 : x
  2. Step 2: Convert to fraction form
    278,996.58/385,018.02 = 151,674.90/x
  3. Step 3: Cross multiply
    278,996.58x = 385,018.02 × 151,674.90
  4. Step 4: Simplify right side
    278,996.58x = 58,397,569,681.70
  5. Step 5: Solve for x
    x = 58,397,569,681.70/278,996.58
  6. Step 6: Final answer
    x = 209,312.85

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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.