Home / 428,527.02-642,799.64-144,226.20

Finding the Fourth Proportional to 428,527.02, 642,799.64 and 144,226.20

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Solution

The fourth proportional to 428,527.02, 642,799.64 and 144,226.20 is: 216,342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,527.02 : 642,799.64 = 144,226.20 : x
  2. Step 2: Convert to fraction form
    428,527.02/642,799.64 = 144,226.20/x
  3. Step 3: Cross multiply
    428,527.02x = 642,799.64 × 144,226.20
  4. Step 4: Simplify right side
    428,527.02x = 92,708,549,438.57
  5. Step 5: Solve for x
    x = 92,708,549,438.57/428,527.02
  6. Step 6: Final answer
    x = 216,342.37

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1.5x scale

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.