Home / 428,329.74-591,094.84-256,254.98

Finding the Fourth Proportional to 428,329.74, 591,094.84 and 256,254.98

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Solution

The fourth proportional to 428,329.74, 591,094.84 and 256,254.98 is: 353,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,329.74 : 591,094.84 = 256,254.98 : x
  2. Step 2: Convert to fraction form
    428,329.74/591,094.84 = 256,254.98/x
  3. Step 3: Cross multiply
    428,329.74x = 591,094.84 × 256,254.98
  4. Step 4: Simplify right side
    428,329.74x = 151,470,996,402.30
  5. Step 5: Solve for x
    x = 151,470,996,402.30/428,329.74
  6. Step 6: Final answer
    x = 353,631.75

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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.