Home / 438,406.30-657,609.45-202,210.30

Finding the Fourth Proportional to 438,406.30, 657,609.45 and 202,210.30

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Solution

The fourth proportional to 438,406.30, 657,609.45 and 202,210.30 is: 303,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,406.30 : 657,609.45 = 202,210.30 : x
  2. Step 2: Convert to fraction form
    438,406.30/657,609.45 = 202,210.30/x
  3. Step 3: Cross multiply
    438,406.30x = 657,609.45 × 202,210.30
  4. Step 4: Simplify right side
    438,406.30x = 132,975,404,167.34
  5. Step 5: Solve for x
    x = 132,975,404,167.34/438,406.30
  6. Step 6: Final answer
    x = 303,315.45

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Double scale
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Similar ratio
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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.