Home / 438,289.40-657,434.10-280,825.40

Finding the Fourth Proportional to 438,289.40, 657,434.10 and 280,825.40

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Solution

The fourth proportional to 438,289.40, 657,434.10 and 280,825.40 is: 421,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,289.40 : 657,434.10 = 280,825.40 : x
  2. Step 2: Convert to fraction form
    438,289.40/657,434.10 = 280,825.40/x
  3. Step 3: Cross multiply
    438,289.40x = 657,434.10 × 280,825.40
  4. Step 4: Simplify right side
    438,289.40x = 184,624,194,106.14
  5. Step 5: Solve for x
    x = 184,624,194,106.14/438,289.40
  6. Step 6: Final answer
    x = 421,238.10

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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.