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Finding the Fourth Proportional to 347,761.60, 521,642.40 and 98,443.60

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Solution

The fourth proportional to 347,761.60, 521,642.40 and 98,443.60 is: 147,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,761.60 : 521,642.40 = 98,443.60 : x
  2. Step 2: Convert to fraction form
    347,761.60/521,642.40 = 98,443.60/x
  3. Step 3: Cross multiply
    347,761.60x = 521,642.40 × 98,443.60
  4. Step 4: Simplify right side
    347,761.60x = 51,352,355,768.64
  5. Step 5: Solve for x
    x = 51,352,355,768.64/347,761.60
  6. Step 6: Final answer
    x = 147,665.40

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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.