Home / 390,768.12-539,116.74-237,743.64

Finding the Fourth Proportional to 390,768.12, 539,116.74 and 237,743.64

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Solution

The fourth proportional to 390,768.12, 539,116.74 and 237,743.64 is: 327,999.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,768.12 : 539,116.74 = 237,743.64 : x
  2. Step 2: Convert to fraction form
    390,768.12/539,116.74 = 237,743.64/x
  3. Step 3: Cross multiply
    390,768.12x = 539,116.74 × 237,743.64
  4. Step 4: Simplify right side
    390,768.12x = 128,171,576,152.53
  5. Step 5: Solve for x
    x = 128,171,576,152.53/390,768.12
  6. Step 6: Final answer
    x = 327,999.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.