Home / 428,526.02-642,798.14-144,225.20

Finding the Fourth Proportional to 428,526.02, 642,798.14 and 144,225.20

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Solution

The fourth proportional to 428,526.02, 642,798.14 and 144,225.20 is: 216,340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,526.02 : 642,798.14 = 144,225.20 : x
  2. Step 2: Convert to fraction form
    428,526.02/642,798.14 = 144,225.20/x
  3. Step 3: Cross multiply
    428,526.02x = 642,798.14 × 144,225.20
  4. Step 4: Simplify right side
    428,526.02x = 92,707,686,366.01
  5. Step 5: Solve for x
    x = 92,707,686,366.01/428,526.02
  6. Step 6: Final answer
    x = 216,340.86

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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.