Home / 318,905.10-479,070.45-266,417.10

Finding the Fourth Proportional to 318,905.10, 479,070.45 and 266,417.10

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Solution

The fourth proportional to 318,905.10, 479,070.45 and 266,417.10 is: 400,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,905.10 : 479,070.45 = 266,417.10 : x
  2. Step 2: Convert to fraction form
    318,905.10/479,070.45 = 266,417.10/x
  3. Step 3: Cross multiply
    318,905.10x = 479,070.45 × 266,417.10
  4. Step 4: Simplify right side
    318,905.10x = 127,632,559,984.70
  5. Step 5: Solve for x
    x = 127,632,559,984.70/318,905.10
  6. Step 6: Final answer
    x = 400,221.13

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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.