Home / 438,186.40-657,279.60-217,002.40

Finding the Fourth Proportional to 438,186.40, 657,279.60 and 217,002.40

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Solution

The fourth proportional to 438,186.40, 657,279.60 and 217,002.40 is: 325,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,186.40 : 657,279.60 = 217,002.40 : x
  2. Step 2: Convert to fraction form
    438,186.40/657,279.60 = 217,002.40/x
  3. Step 3: Cross multiply
    438,186.40x = 657,279.60 × 217,002.40
  4. Step 4: Simplify right side
    438,186.40x = 142,631,250,671.04
  5. Step 5: Solve for x
    x = 142,631,250,671.04/438,186.40
  6. Step 6: Final answer
    x = 325,503.60

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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.