Home / 438,199.40-657,299.10-280,735.40

Finding the Fourth Proportional to 438,199.40, 657,299.10 and 280,735.40

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Solution

The fourth proportional to 438,199.40, 657,299.10 and 280,735.40 is: 421,103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,199.40 : 657,299.10 = 280,735.40 : x
  2. Step 2: Convert to fraction form
    438,199.40/657,299.10 = 280,735.40/x
  3. Step 3: Cross multiply
    438,199.40x = 657,299.10 × 280,735.40
  4. Step 4: Simplify right side
    438,199.40x = 184,527,125,758.14
  5. Step 5: Solve for x
    x = 184,527,125,758.14/438,199.40
  6. Step 6: Final answer
    x = 421,103.10

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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.