Home / 438,215.56-657,595.46-280,557.16

Finding the Fourth Proportional to 438,215.56, 657,595.46 and 280,557.16

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Solution

The fourth proportional to 438,215.56, 657,595.46 and 280,557.16 is: 421,009.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,215.56 : 657,595.46 = 280,557.16 : x
  2. Step 2: Convert to fraction form
    438,215.56/657,595.46 = 280,557.16/x
  3. Step 3: Cross multiply
    438,215.56x = 657,595.46 × 280,557.16
  4. Step 4: Simplify right side
    438,215.56x = 184,493,114,686.49
  5. Step 5: Solve for x
    x = 184,493,114,686.49/438,215.56
  6. Step 6: Final answer
    x = 421,009.96

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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.