Home / 428,460.45-642,746.57-158,551.85

Finding the Fourth Proportional to 428,460.45, 642,746.57 and 158,551.85

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Solution

The fourth proportional to 428,460.45, 642,746.57 and 158,551.85 is: 237,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,460.45 : 642,746.57 = 158,551.85 : x
  2. Step 2: Convert to fraction form
    428,460.45/642,746.57 = 158,551.85/x
  3. Step 3: Cross multiply
    428,460.45x = 642,746.57 × 158,551.85
  4. Step 4: Simplify right side
    428,460.45x = 101,908,653,748.16
  5. Step 5: Solve for x
    x = 101,908,653,748.16/428,460.45
  6. Step 6: Final answer
    x = 237,848.45

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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.